Gadobenic acid

别名: Gadobenic酸;钆贝酸
目录号: V49086 纯度: ≥98%
钆苯酸是钆和配体 BOPTA 的复合物,是一种磁共振成像 (MRI) 造影剂。
Gadobenic acid CAS号: 113662-23-0
产品类别: New3
产品仅用于科学研究,不针对患者销售
规格 价格
500mg
1g
Other Sizes
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产品描述
钆苯酸是钆和配体 BOPTA 的复合物,是一种磁共振成像 (MRI) 造影剂。
生物活性&实验参考方法
药代性质 (ADME/PK)
Absorption, Distribution and Excretion
Gadobenate ion has a rapid distribution half-life (reported as mean + or - SD) of 0.084 + or - 0.012 to 0.605 + or - 0.072 hours. Volume of distribution of the central compartment ranged from 0.074:: 0.017 to 0.158 :: 0.038 L/kg, and estimates of volume of distribution by area ranged from 0.170+ or - 0.016 to 0.282+ or - 0.079 L/kg. These latter estimates are approximately equivalent to the average volume of extracellular body water in man. In vitro studies showed no appreciable binding of gadobenate ion to human serum proteins. /Gadobenate ion/
... The pharmacokinetics were evaluated in rats, rabbits, dogs and monkeys after iv injections of non-labelled gadobenate dimeglumine and, for biodistribution studies, (153)-Gd-labelled gadobenate dimeglumine. Assays were performed by high performance liquid chromatography, X-ray fluorescence and gamma spectrometry. The binding of gadobenate ion to animal and human serum albumin was studied by equilibrium dialysis. ... After iv injection gadobenate dimeglumine distributes into plasma and extracellular fluid as well as into the intrahepatocytic space. Gadobenate ion is cleared from plasma by renal and biliary excretion. It does not accumulate in specific tissues, except temporarily in tissues related to its elimination. Gadobenate ion is not metabolized. Its binding to plasma proteins is too weak to be detected by equilibrium dialysis. ...
Gadobenate ion is eliminated predominately via the kidneys, with 78% to 96% of an administered dose recovered in the urine. Total plasma clearance and renal clearance estimates of gadobenate ion were similar, ranging from 0.093 + or - 0.010 to 0.133 + o r- 0.270 L/hr/kg and 0.082+ or - 0.007 to 0.104 + or - 0.039 L/hr/kg, respectively. The clearance is similar to that of substances that are subject to glomerular filtration. The mean elimination half-life ranged from 1.17+ or - 0.26 to 2.02 + or - 0.60 hours. A small percentage ofthe administered dose (0.6% to 4%) is eliminated via the biliary route and recovered in feces.
It is not known to what extent gadobenate dimeglumine is excreted in human milk. It is known from rat experiments that less than 0.5% of the administered dose is transferred via milk from mother to neonates.
For more Absorption, Distribution and Excretion (Complete) data for GADOBENATE DIMEGLUMINE (7 total), please visit the HSDB record page.
Metabolism / Metabolites
There was no detectable biotransformation of gadobenate ion. Dissociation of gadobenate ion in vivo has been shown to be minimal, with less than 1% of the free chelating agent being recovered alone in feces.
Biological Half-Life
Gadobenate ion is eliminated predominately via the kidneys, with 78% to 96% of an administered dose recovered in the urine. ... The mean elimination half-life ranged from 1.17+ or - 0.26 to 2.02 + or - 0.60 hours. ...
... Fifteen children scheduled to undergo contrast-enhanced MRI for suspected disease of the central nervous system received a single intravenous injection of 0.1 mmol/kg gadobenate dimeglumine. ... 1.2 hr for terminal elimination half-life were determined across all age groups combined.
A single intravenous dose of 0.2 mmol/kg of Multihance was administered to 11 subjects (5 males and 6 females) with end-stage renal disease requiring hemodialysis ... . The mean elimination half-life on dialysis was 1.21 + or - 0.29 hours as compared with 42.4 + or - 24.4 hours when off dialysis.
A single intravenous dose of 0.2 mmol/kg of Multihance was administered to 20 subjects with impaired renal function (6 men and 3 women with moderate renal impairment (urine creatinine clearance > 30 to < 60 mL/min) and 5 men and 6 women with severe renal impairment (urine creatinine clearance > 10 to < 30 mL/min)). Mean estimates of the elimination half-life were 6.1 + or - 3.0 and 9.5 + or - 3.1 hours for the moderate and severe renal impairment groups, respectively as compared with 1.0 to 2.0 hours in healthy volunteers.
Gadobenate ion has a rapid distribution half-life (reported as mean + or - SD) of 0.084 + or - 0.012 to 0.605 + or - 0.072 hours.
毒性/毒理 (Toxicokinetics/TK)
Toxicity Summary
IDENTIFICATION AND USE: Gadobenate dimeglumine (MultiHance) is a contract agent for MRI studies, supplied as a colorless to slightly yellow, aqueous solution intended for intravenous use only. HUMAN EXPOSURE AND TOXICITY: Gadolinium-based contrast agents (GBCAs) increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs. Avoid use of GBCAs in these patients unless the diagnostic information is essential and not available with non-contrasted MRI or other modalities. NSF may result in fatal or debilitating systemic fibrosis affecting the skin, muscle and internal organs. The risk for NSF appears highest among patients with: chronic, severe kidney disease, or acute kidney injury. Screen patients for acute kidney injury and other conditions that may reduce renal function. For patients at risk for chronically reduced renal function (older than 60 years, hypertension or diabetes), estimate the glomerular filtration rate (GFR) through laboratory testing. For patients at highest risk for NSF, do not exceed the recommended MultiHance dose and allow a sufficient period of time for elimination of the drug from the body prior to re-administration. Anaphylactic and anaphylactoid reactions have been reported, involving cardiovascular, respiratory, and/or cutaneous manifestations. Some patients experienced circulatory collapse and died. Cardiac arrhythmias have been observed in patients receiving MultiHance in clinical trials. The mutagenic potential of gadobenate dimeglumine was studied by the chromosome aberration test in cultured human lymphocytes. The agent induced no increase in the incidence of aberrant cells or polyploid cells in any treatments both in the presence and absence of metabolic activation. Thus, it is concluded that gadobenate dimeglumine has shown no evidence of clastogenic or polyploidy-inducing activity under these experimental conditions. ANIMAL STUDIES: To support the clinical use of gadobenate dimeglumine for injection as an intravascular magnetic resonance imaging contrast medium through an extensive battery of toxicological safety studies. Single and multiple dose toxicity, reproduction and mutagenicity assessments were carried out in rodents and non-rodents. Initial adverse clinical signs in monkeys were associated with a systemic exposure 34 times higher than that found in humans after 0.1 mmol/kg gadobenate dimeglumine. Good systemic tolerance was observed in repeated dose toxicity studies. In experimental conditions of focal brain ischemia associated with blood-brain barrier lesions, gadobenate dimeglumine was well tolerated up to doses even 10 times higher than the maximum clinical dose (0.3 mmol/kg) intended for brain imaging procedures. Reproductive performance and physical and behavioral development of offspring were unaffected in rats. However, MultiHance has been shown to be teratogenic in rabbits when given intravenously administered at 2 mmol/kg/day (6 times the human dose based on body surface area) during organogenesis (day 6 to 18) inducing microphthalmia/small eye and/or focal retinal fold in 3 fetuses from 3 separate litters. In addition, MultiHance intravenously administered at 3 mmol/kg/day (10 times the human dose based on body surface area) has been shown to increase intrauterine deaths in rabbits. Mutagenicity tests excluded any genotoxic potential of gadobenate dimeglumine. The results were negative in the following genetic toxicity studies: 1) in vitro bacteria reverse mutation assays, 2) an in vitro gene mutation assay in mammalian cells, 3) an in vitro chromosomal aberration assay, 4) an in vitro unscheduled DNA synthesis assay, and 5) an in vivo micronucleus assay in rats.
Effects During Pregnancy and Lactation
◉ Summary of Use during Lactation
Gadobenate has been safely used in infants, so it does not appear to pose a substantial risk to a breastfed infant. Guidelines developed by North American professional organizations state that breastfeeding need not be disrupted after a nursing mother receives a gadolinium-containing contrast medium.
◉ Effects in Breastfed Infants
Relevant published information was not found as of the revision date.
◉ Effects on Lactation and Breastmilk
Relevant published information was not found as of the revision date.
Interactions
MultiHance and other drugs may compete for the canalicular multispecific organic anion transporter (MOAT also referred to as MRP2 or ABCC2). Therefore MultiHance may prolong the systemic exposure of drugs such as cisplatin, antracyclines (e.g. doxorubicin, daunorubicin), vinca alkaloids (e.g. vincristine), methotrexate, etoposide, tamoxifen, and paclitaxel. In particular, consider the potential for prolonged drug exposure in patients with decreased MOAT activity (e.g. Dubin Johnson syndrome).
Non-Human Toxicity Values
LD50 Mouse iv 5.7 mmol/kg (at 1 mL/min), 7.9 mmol/kg (at 0.2 mL/min)
LD50 Rat iv 6.6 mmol/kg (at 6 mL/min), 9.2 mmol/kg (at 1 mL/min)
LD50 Rat (male) intracisternal 0.42 mmol/kg
LD50 Rat (female) intracisternal 0.25 mmol/kg
参考文献

[1]. Gadoxetic acid-enhanced MRI for the characterization of hepatocellular carcinoma: A systematic review and meta-analysis. J Magn Reson Imaging. 2017 Jan;45(1):281-290.

其他信息
Gadobenate Dimeglumine is a gadolinium-based paramagnetic contrast agent. When placed in a magnetic field, gadobenate dimeglumine produces a large magnetic moment and so a large local magnetic field, which can enhance the relaxation rate of nearby protons; as a result, the signal intensity of tissue images observed with magnetic resonance imaging (MRI) may be enhanced. Because this agent is preferentially taken up by normal functioning hepatocytes, normal hepatic tissue is enhanced with MRI while tumor tissue is unenhanced. In addition, because gadobenate dimeglumine is excreted in the bile, it may be used to visualize the biliary system using MRI.
See also: Gadobenic Acid (preferred).
Therapeutic Uses
Contrast Media
MultiHance is indicated for intravenous use in magnetic resonance imaging (MRI) of the central nervous system (CNS) in adults and children over 2 years of age to visualize lesions with abnormal blood brain barrier or abnormal vascularity of the brain, spine, and associated tissues. /Included in US product labeling/
MultiHance is indicated for use in magnetic resonance angiography (MRA) to evaluate adults with known or suspected renal or aorto-ilio-femoral occlusive vascular disease. /Included in US product label/
A study was conducted to compare gadobenate dimeglumine (Multihance) with other commercially available MRI contrast agents for the detection of intracranial metastases ... A retrospective assessment was performed on MR images from 22 patients enrolled in a prior phase II clinical trial of gadobenate dimeglumine. Each patient underwent two examinations: a first examination with one of three "comparator" agents (gadopentetate dimeglumine, gadodiamide, and gadoterate meglumine) at a dosage of either 0.1 or 0.2 mmol/kg, and then a similar examination with gadobenate dimeglumine at equal dosage. All images were evaluated randomly for lesion number and location in unpaired and then paired fashion by two independent, masked neuroradiologists. A third assessor performed quantitative assessments on the available complete sets of digitally recorded images (10 cases) ... The findings for the comparator agents were pooled. Sensitivity for lesion detection with gadobenate dimeglumine (93%-100%) was markedly superior to that of comparator-enhanced examinations (65%-73%). The increase of lesion-to-brain contrast of the main lesion was consistently greater with gadobenate dimeglumine than with comparator agents relative to unenhanced contrast (+43% vs. +27%) ... Gadobenate dimeglumine proved to be a more efficacious agent than comparator contrast agents for the detection of intracranial metastatic lesions: superior efficacy was noted by both reviewers for total lesion count as well as for sensitivity and positive predictive value for lesion detection. The higher relaxivity of gadobenate dimeglumine might explain the superior sensitivity of gadobenate dimeglumine-enhanced MRI for the detection of central nervous system metastases.
For more Therapeutic Uses (Complete) data for GADOBENATE DIMEGLUMINE (9 total), please visit the HSDB record page.
Drug Warnings
/BOXED WARNING/ WARNING: NEPHROGENIC SYSTEMIC FIBROSIS. Gadolinium-based contrast agents (GBCAs) increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs. Avoid use of GBCAs in these patients unless the diagnostic information is essential and not available with non-contrasted MRI or other modalities. NSF may result in fatal or debilitating systemic fibrosis affecting the skin, muscle and internal organs. The risk for NSF appears highest among patients with: chronic, severe kidney disease (GFR <30 mL/min/1.73 sq m), or acute kidney injury. Screen patients for acute kidney injury and other conditions that may reduce renal function. For patients at risk for chronically reduced renal function (e.g. age > 60 years, hypertension or diabetes), estimate the glomerular filtration rate (GFR) through laboratory testing. For patients at highest risk for NSF, do not exceed the recommended MultiHance dose and allow a sufficient period of time for elimination of the drug from the body prior to re-administration.
Gadolinium-based contrast agents (GBCAs) increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs. Avoid use of GBCAs among these patients unless the diagnostic information is essential and not available with non-contrast enhanced MRI or other modalities. The GBCA-associated NSF risk appears highest for patients with chronic, severe kidney disease (GFR <30 mL/min/1.73 sq m) as well as patients with acute kidney injury. The risk appears lower for patients with chronic, moderate kidney disease (GFR 30-59 mL/min/1.73 sq m) and little, if any, for patients with chronic, mild kidney disease (GFR 60-89 mL/min/1.73 sq m). NSF may result in fatal or debilitating fibrosis affecting the skin, muscle and internal organs. ... Screen patients for acute kidney injury and other conditions that may reduce renal function. Features of acute kidney injury consist of rapid (over hours to days) and usually reversible decrease in kidney function, commonly in the setting of surgery, severe infection, injury or drug-induced kidney toxicity. Serum creatinine levels and estimated GFR may not reliably assess renal function in the setting of acute kidney injury. For patients at risk for chronically reduced renal function (e.g., age > 60 years, diabetes mellitus or chronic hypertension), estimate the GFR through laboratory testing. Among the factors that may increase the risk for NSF are repeated or higher than recommended doses of a GBCA and the degree of renal impairment at the time of exposure. Record the specific GBCA and the dose administered to a patient. For patients at highest risk for NSF, do not exceed the recommended MultiHance dose and allow a sufficient period of time for elimination of the drug prior to re-administration. For patients receiving hemodialysis, physicians may consider the prompt initiation of hemodialysis following the administration of a GBCA in order to enhance the contrast agent's elimination. The usefulness of hemodialysis in the prevention of NSF is unknown
Anaphylactic and anaphylactoid reactions have been reported, involving cardiovascular, respiratory, and/or cutaneous manifestations. Some patients experienced circulatory collapse and died. In most cases, initial symptoms occurred within minutes of MultiHance administration and resolved with prompt emergency treatment. Prior to MultiHance administration, ensure the availability of personnel trained and medications to treat hypersensitivity reactions. If such a reaction occurs stop MultiHance and immediately begin appropriate therapy. Additionally, consider the risk for hypersensitivity reactions, especially in patients with a history of hypersensitivity reactions or a history of asthma or other allergic disorders. Observe patients for signs and symptoms of a hypersensitivity reaction during and for up to 2 hours after MultiHance administration.
FDA Pregnancy Risk Category: C /RISK CANNOT BE RULED OUT. Adequate, well controlled human studies are lacking, and animal studies have shown risk to the fetus or are lacking as well. There is a chance of fetal harm if the drug is given during pregnancy; but the potential benefits may outweigh the potential risk./
For more Drug Warnings (Complete) data for GADOBENATE DIMEGLUMINE (15 total), please visit the HSDB record page.
*注: 文献方法仅供参考, InvivoChem并未独立验证这些方法的准确性
化学信息 & 存储运输条件
分子式
C22H28GDN3O11
分子量
667.7
精确质量
668.096
CAS号
113662-23-0
PubChem CID
131700865
外观&性状
Hygroscopic powder
熔点
124 °C
蒸汽压
1.21E-26mmHg at 25°C
tPSA
213.94
氢键供体(HBD)数目
2
氢键受体(HBA)数目
14
可旋转键数目(RBC)
17
重原子数目
37
分子复杂度/Complexity
726
定义原子立体中心数目
0
SMILES
[Gd+3].O(CC1C=CC=CC=1)CC(C(=O)[O-])N(CC(=O)[O-])CCN(CC(=O)[O-])CCN(CC(=O)[O-])CC(=O)[O-].[H+].[H+]
InChi Key
MXZROTBGJUUXID-UHFFFAOYSA-K
InChi Code
InChI=1S/C22H31N3O11.Gd/c26-18(27)10-23(6-7-24(11-19(28)29)12-20(30)31)8-9-25(13-21(32)33)17(22(34)35)15-36-14-16-4-2-1-3-5-16;/h1-5,17H,6-15H2,(H,26,27)(H,28,29)(H,30,31)(H,32,33)(H,34,35);/q;+3/p-3
化学名
2-[2-[carboxylatomethyl(carboxymethyl)amino]ethyl-[2-[carboxylatomethyl-(1-carboxy-2-phenylmethoxyethyl)amino]ethyl]amino]acetate;gadolinium(3+)
HS Tariff Code
2934.99.9001
存储方式

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

运输条件
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
溶解度数据
溶解度 (体外实验)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
溶解度 (体内实验)
注意: 如下所列的是一些常用的体内动物实验溶解配方,主要用于溶解难溶或不溶于水的产品(水溶度<1 mg/mL)。 建议您先取少量样品进行尝试,如该配方可行,再根据实验需求增加样品量。

注射用配方
(IP/IV/IM/SC等)
注射用配方1: DMSO : Tween 80: Saline = 10 : 5 : 85 (如: 100 μL DMSO 50 μL Tween 80 850 μL Saline)
*生理盐水/Saline的制备:将0.9g氯化钠/NaCl溶解在100 mL ddH ₂ O中,得到澄清溶液。
注射用配方 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (如: 100 μL DMSO 400 μL PEG300 50 μL Tween 80 450 μL Saline)
注射用配方 3: DMSO : Corn oil = 10 : 90 (如: 100 μL DMSO 900 μL Corn oil)
示例: 注射用配方 3 (DMSO : Corn oil = 10 : 90) 为例说明, 如果要配制 1 mL 2.5 mg/mL的工作液, 您可以取 100 μL 25 mg/mL 澄清的 DMSO 储备液,加到 900 μL Corn oil/玉米油中, 混合均匀。
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注射用配方 4: DMSO : 20% SBE-β-CD in Saline = 10 : 90 [如:100 μL DMSO 900 μL (20% SBE-β-CD in Saline)]
*20% SBE-β-CD in Saline的制备(4°C,储存1周):将2g SBE-β-CD (磺丁基-β-环糊精) 溶解于10mL生理盐水中,得到澄清溶液。
注射用配方 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (如: 500 μL 2-Hydroxypropyl-β-cyclodextrin (羟丙基环胡精) 500 μL Saline)
注射用配方 6: DMSO : PEG300 : Castor oil : Saline = 5 : 10 : 20 : 65 (如: 50 μL DMSO 100 μL PEG300 200 μL Castor oil 650 μL Saline)
注射用配方 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (如: 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
注射用配方 8: 溶解于Cremophor/Ethanol (50 : 50), 然后用生理盐水稀释。
注射用配方 9: EtOH : Corn oil = 10 : 90 (如: 100 μL EtOH 900 μL Corn oil)
注射用配方 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (如: 100 μL EtOH 400 μL PEG300 50 μL Tween 80 450 μL Saline)


口服配方
口服配方 1: 悬浮于0.5% CMC Na (羧甲基纤维素钠)
口服配方 2: 悬浮于0.5% Carboxymethyl cellulose (羧甲基纤维素)
示例: 口服配方 1 (悬浮于 0.5% CMC Na)为例说明, 如果要配制 100 mL 2.5 mg/mL 的工作液, 您可以先取0.5g CMC Na并将其溶解于100mL ddH2O中,得到0.5%CMC-Na澄清溶液;然后将250 mg待测化合物加到100 mL前述 0.5%CMC Na溶液中,得到悬浮液。
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口服配方 3: 溶解于 PEG400 (聚乙二醇400)
口服配方 4: 悬浮于0.2% Carboxymethyl cellulose (羧甲基纤维素)
口服配方 5: 溶解于0.25% Tween 80 and 0.5% Carboxymethyl cellulose (羧甲基纤维素)
口服配方 6: 做成粉末与食物混合


注意: 以上为较为常见方法,仅供参考, InvivoChem并未独立验证这些配方的准确性。具体溶剂的选择首先应参照文献已报道溶解方法、配方或剂型,对于某些尚未有文献报道溶解方法的化合物,需通过前期实验来确定(建议先取少量样品进行尝试),包括产品的溶解情况、梯度设置、动物的耐受性等。

请根据您的实验动物和给药方式选择适当的溶解配方/方案:
1、请先配制澄清的储备液(如:用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液,按从左到右的顺序依次添加助溶剂,澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明,并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀/澄清;向上述体系中加入50 μL Tween-80,混合均匀/澄清;然后继续加入450 μL ddH2O (或 saline)定容至 1 mL;

3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出,可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果,工作液请现配现用!
6、如不确定怎么将母液配置成体内动物实验的工作液,请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。
制备储备液 1 mg 5 mg 10 mg
1 mM 1.4977 mL 7.4884 mL 14.9768 mL
5 mM 0.2995 mL 1.4977 mL 2.9954 mL
10 mM 0.1498 mL 0.7488 mL 1.4977 mL

1、根据实验需要选择合适的溶剂配制储备液 (母液):对于大多数产品,InvivoChem推荐用DMSO配置母液 (比如:5、10、20mM或者10、20、50 mg/mL浓度),个别水溶性高的产品可直接溶于水。产品在DMSO 、水或其他溶剂中的具体溶解度详见上”溶解度 (体外)”部分;

2、如果您找不到您想要的溶解度信息,或者很难将产品溶解在溶液中,请联系我们;

3、建议使用下列计算器进行相关计算(摩尔浓度计算器、稀释计算器、分子量计算器、重组计算器等);

4、母液配好之后,将其分装到常规用量,并储存在-20°C或-80°C,尽量减少反复冻融循环。

计算器

摩尔浓度计算器可计算特定溶液所需的质量、体积/浓度,具体如下:

  • 计算制备已知体积和浓度的溶液所需的化合物的质量
  • 计算将已知质量的化合物溶解到所需浓度所需的溶液体积
  • 计算特定体积中已知质量的化合物产生的溶液的浓度
使用摩尔浓度计算器计算摩尔浓度的示例如下所示:
假如化合物的分子量为350.26 g/mol,在5mL DMSO中制备10mM储备液所需的化合物的质量是多少?
  • 在分子量(MW)框中输入350.26
  • 在“浓度”框中输入10,然后选择正确的单位(mM)
  • 在“体积”框中输入5,然后选择正确的单位(mL)
  • 单击“计算”按钮
  • 答案17.513 mg出现在“质量”框中。以类似的方式,您可以计算体积和浓度。

稀释计算器可计算如何稀释已知浓度的储备液。例如,可以输入C1、C2和V2来计算V1,具体如下:

制备25毫升25μM溶液需要多少体积的10 mM储备溶液?
使用方程式C1V1=C2V2,其中C1=10mM,C2=25μM,V2=25 ml,V1未知:
  • 在C1框中输入10,然后选择正确的单位(mM)
  • 在C2框中输入25,然后选择正确的单位(μM)
  • 在V2框中输入25,然后选择正确的单位(mL)
  • 单击“计算”按钮
  • 答案62.5μL(0.1 ml)出现在V1框中
g/mol

分子量计算器可计算化合物的分子量 (摩尔质量)和元素组成,具体如下:

注:化学分子式大小写敏感:C12H18N3O4  c12h18n3o4
计算化合物摩尔质量(分子量)的说明:
  • 要计算化合物的分子量 (摩尔质量),请输入化学/分子式,然后单击“计算”按钮。
分子质量、分子量、摩尔质量和摩尔量的定义:
  • 分子质量(或分子量)是一种物质的一个分子的质量,用统一的原子质量单位(u)表示。(1u等于碳-12中一个原子质量的1/12)
  • 摩尔质量(摩尔重量)是一摩尔物质的质量,以g/mol表示。
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配液计算器可计算将特定质量的产品配成特定浓度所需的溶剂体积 (配液体积)

  • 输入试剂的质量、所需的配液浓度以及正确的单位
  • 单击“计算”按钮
  • 答案显示在体积框中
动物体内实验配方计算器(澄清溶液)
第一步:请输入基本实验信息(考虑到实验过程中的损耗,建议多配一只动物的药量)
第二步:请输入动物体内配方组成(配方适用于不溶/难溶于水的化合物),不同的产品和批次配方组成不同,如对配方有疑问,可先联系我们提供正确的体内实验配方。此外,请注意这只是一个配方计算器,而不是特定产品的确切配方。
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计算结果:

工作液浓度 mg/mL;

DMSO母液配制方法 mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL)。如该浓度超过该批次药物DMSO溶解度,请首先与我们联系。

体内配方配制方法μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL ddH2O,混匀澄清。

(1) 请确保溶液澄清之后,再加入下一种溶剂 (助溶剂) 。可利用涡旋、超声或水浴加热等方法助溶;
            (2) 一定要按顺序加入溶剂 (助溶剂) 。

临床试验信息
Comparison of Contrast Agents in Liver MR for the Detection of Hepatic Metastases
CTID: NCT04973007
Phase: Phase 4    Status: Recruiting
Date: 2024-09-19
Effect on Body Movement and Mental Skills in Patients Who Received Gadolinium-based Contrast Media for Magnetic Resonance Examination Multiple Times Within 5 Years
CTID: NCT04373564
Phase: Phase 4    Status: Recruiting
Date: 2024-05-17
Comparative Effectiveness of Gadopiclenol for Evaluation of Adult Congenital Heart Anatomy and Hemodynamics
CTID: NCT06406517
Phase: Phase 3    Status: Not yet recruiting
Date: 2024-05-09
Hybrid Molecular Imaging of ER in Breast Cancer Patients With DCIS
CTID: NCT03703492
Phase: Phase 2    Status: Completed
Date: 2024-01-19
Novel MRI Techniques for the Characterization and Treatment Assessment of High Grade Brain Lesions
CTID: NCT04132843
Phase: N/A    Status: Completed
Date: 2022-11-21
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PSMA-Targeted 18F-DCFPyL PET/MRI for the Detection of Prostate Cancer
CTID: NCT04910425
Phase: Phase 2    Status: Not yet recruiting
Date: 2022-08-03


P03277 Dose Finding Study in Central Nervous System (CNS) Magnetic Resonance Imaging (MRI)
CTID: NCT02633501
Phase: Phase 2    Status: Completed
Date: 2021-10-25
QSM and Regional DCE MRI Permeability Using GOCART Technique
CTID: NCT03091803
Phase:    Status: Withdrawn
Date: 2021-04-05
Regadenoson Stress-MRI to Identify Coronary Artery Disease in Atrial Fibrillation Patients
CTID: NCT01710254
Phase: Phase 2    Status: Completed
Date: 2017-12-13
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INTRAINDIVIDUAL CROSS-OVER STUDY TO COMPARE MULTIHANCE® AND OMNISCAN® AT A DOSE OF 0.1 MMOL/KGBW IN THE DIFFERENTIAL DIAGNOSIS OF DISC HERNIATION VS. SCAR
CTID: null
Phase: Phase 4    Status: Completed
Date: 2007-01-15
A PHASE IIIB, DOUBLE-BLIND, MULTI-CENTER, RANDOMIZED, CROSS-OVER STUDY TO COMPARE 0.1 MMOL/KG OF MULTIHANCE® WITH 0.1 MMOL/KG OF MAGNEVIST® FOR CONTRAST-ENHANCED MAGNETIC RESONANCE ANGIOGRAPHY (CE-MRA) OF PERIPHERAL ARTERIES
CTID: null
Phase: Phase 3    Status: Completed
Date: 2006-12-18
Evaluation of the diagnostic quality of CMC-001 (manganese chloride tetrahydrate) in liver MR-imaging in patients with liver metastases in comparison to Gadolinium BOPTA. A randomised cross-over Phase III Trial.
CTID: null
Phase: Phase 3    Status: Completed
Date: 2005-05-20
Intraindividual cross-over study to compare 1.5-tesla and 3.0-tesla MRI with 0.05+0.05 mmol/kgbw MultiHance® in patients with Myocardial Infarction
CTID: null
Phase: Phase 3    Status: Completed
Date: 2005-03-18
A PHASE III, MULTI-CENTER, OPEN-LABEL STUDY TO EVALUATE SAFETY AND EFFICACY OF MULTIHANCE® AT THE DOSE OF 0.10 mmol/kg IN MAGNETIC RESONANCE IMAGING OF THE CENTRAL NERVOUS SYSTEM IN PEDIATRIC PATIENTS.
CTID: null
Phase: Phase 3    Status: Completed
Date:
INTRAINDIVIDUAL CROSS-OVER STUDY TO COMPARE MULTIHANCE® AND MAGNEVIST® AT A DOSE OF 0.1 MMOL/KGBW IN CERVICO-CEREBRAL MR ANGIOGRAPHY AND CEREBRAL MR PERFUSION IMAGING AT 3 TESLA IN PATIENTS WITH CAROTID ARTERY STENOSIS
CTID: null
Phase: Phase 4    Status: Completed
Date:

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