| 规格 | 价格 | 库存 | 数量 |
|---|---|---|---|
| 250mg |
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| 500mg |
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| 1g |
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| 2g |
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| Other Sizes |
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| 体内研究 (In Vivo) |
静脉注射（6、20 或 60 mg/kg/天）持续 4 周时，左旋四氢叶酸钙会增加 5-氟尿嘧啶的毒性[2]。
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| 动物实验 |
Crj:CD(SD)BR rats (5 weeks)[2]
6, 20 or 60 mg/kg/day i.v.; for 4 weeks (combined with 10 mg/kg/day 5-Fluorouracil) |
| 毒性/毒理 (Toxicokinetics/TK) |
Effects During Pregnancy and Lactation
◉ Summary of Use during Lactation Leucovorin (folinic acid; 5-formyltetrahydrofolic acid) and its levo- isomer, levoleucovorin, are folic acid derivatives that are normal components of breastmilk. Because leucovorin and levoleucovorin are used as therapeutic agents with potentially toxic drugs such as fluorouracil or methotrexate, the LactMed record of the drug it is used with should be consulted. ◉ 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. Toxicity Data Mouse(iv): LD50 732 mg/kg |
| 参考文献 | |
| 其他信息 |
Calcium folinate is a tetrahydrofolic acid.
Leucovorin Calcium is an active metabolite of folic acid (also called folinic acid and citrovorum factor), which does not require metabolism by dihydrofolate reductase, the molecular target of folate antagonist-type chemotherapeutic drugs. Leucovorin calcium counteracts the toxic effects of these medications, 'rescuing' the patient while permitting the antitumor activity of the folate antagonist. This agent also potentiates the effects of fluorouracil and its derivatives by stabilizing the binding of the drug's metabolite to its target enzyme, thus prolonging drug activity. (NCI04) Levoleucovorin Calcium is a levo isoform of leucovorin calcium with antineoplastic activity. Levoleucovorin is an active metabolite of folic acid, which does not require metabolism by dihydrofolate reductase. This agent counteracts the toxic effects of other folic acid derivative agents, rescuing the patient while permitting the antitumor activity of the folate antagonist. This agent also potentiates the effects of fluorouracil and its derivatives by stabilizing the binding of the drug's metabolite to its target enzyme, thus prolonging drug activity. The active metabolite of FOLIC ACID. Leucovorin is used principally as an antidote to FOLIC ACID ANTAGONISTS. See also: Leucovorin (has active moiety); Leucovorin calcium; pyrimethamine (component of). |
| 分子式 |
C20H21N7O7.CA
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|---|---|---|
| 分子量 |
511.5
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| 精确质量 |
511.112
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| 元素分析 |
C, 46.87; H, 4.33; Ca, 7.82; N, 19.13; O, 21.85
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| CAS号 |
80433-71-2
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| 相关CAS号 |
80433-71-2 (Ca);163254-40-8 (sodium);68538-85-2;
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| PubChem CID |
135403647
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| 外观&性状 |
White to yellow solid powder
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| 熔点 |
240-250ºC
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| LogP |
0
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| tPSA |
225.5
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| 氢键供体(HBD)数目 |
5
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| 氢键受体(HBA)数目 |
10
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| 可旋转键数目(RBC) |
7
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| 重原子数目 |
35
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| 分子复杂度/Complexity |
900
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| 定义原子立体中心数目 |
1
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| SMILES |
C(N1[C@@H](CNC2C=CC(C(=O)N[C@H](C(=O)O)CCC(=O)O)=CC=2)CNC2NC(=NC(C1=2)=O)N)=O.[Ca]
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| InChi Key |
KVUAALJSMIVURS-QNTKWALQSA-L
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| InChi Code |
InChI=1S/C20H23N7O7.Ca/c21-20-25-16-15(18(32)26-20)27(9-28)12(8-23-16)7-22-11-3-1-10(2-4-11)17(31)24-13(19(33)34)5-6-14(29)30;/h1-4,9,12-13,22H,5-8H2,(H,24,31)(H,29,30)(H,33,34)(H4,21,23,25,26,32);/q;+2/p-2/t12-,13-;/m0./s1
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| 化学名 |
calcium;(2S)-2-[[4-[[(6S)-2-amino-5-formyl-4-oxo-3,6,7,8-tetrahydropteridin-6-yl]methylamino]benzoyl]amino]pentanedioate
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| 别名 |
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| HS Tariff Code |
2934.99.9001
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| 存储方式 |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month 注意： 请将本产品存放在密封且受保护的环境中（例如氮气保护），避免吸湿/受潮和光照。 |
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| 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)
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| 溶解度 (体外实验) |
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| 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
注射用配方1: DMSO : Tween 80： Saline = 10 : 5 : 85 (如： 100 μL DMSO → 50 μL Tween 80 → 850 μL Saline)(IP/IV/IM/SC等) *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 : PEG300 ：Tween 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: 以注射用配方 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。 View More
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)] 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: 以口服配方 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。 View More
口服配方 3: 溶解于 PEG400 (聚乙二醇400) 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 | 1.9550 mL | 9.7752 mL | 19.5503 mL | |
| 5 mM | 0.3910 mL | 1.9550 mL | 3.9101 mL | |
| 10 mM | 0.1955 mL | 0.9775 mL | 1.9550 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：取 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) 。
| NCT Number | Recruitment | interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
| NCT01150045 | Active Recruiting |
Drug: celecoxib Drug: 5-fluorouracil |
Colorectal Cancer | Alliance for Clinical Trials in Oncology |
June 2010 | Phase 3 |
| NCT04796948 | Active Recruiting |
Drug: Irinotecan liposome; oxaliplatin; 5-FU (Fluorouracil Injection); LV(Calcium Folinate Injection) |
Advanced Pancreatic Cancer | Jiangsu HengRui Medicine Co., Ltd. |
April 8, 2021 | Phase 1 |
| NCT04060017 | Recruiting | Drug: Levoleucovorin Calcium Other: Placebo |
Autism Spectrum Disorder Language Disorders |
Southwest Autism Research & Resource Center |
September 22, 2020 | Phase 2 |
| NCT04060030 | Recruiting | Drug: Levoleucovorin Calcium Other: Placebo |
Autism Spectrum Disorder Language Disorders |
Southwest Autism Research & Resource Center |
October 8, 2020 | Phase 2 |
| NCT00004317 | Recruiting | Drug: Levoleucovorin Calcium Drug: Pyrimethamine |
Toxoplasmosis | National Institute of Allergy and Infectious Diseases (NIAID) |
July 2000 | Phase 4 |
Cycloguanil-d6 (Chlorguanide triazine-d6)
Levomefolate-13C5 calcium (5-Methyltetrahydrofolic Acid-13C5 (calcium salt))
Antitumor agent-99
Methotrexate metabolite-d3 (DAMPA-d3)
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