grade
pharmaceutical primary standard
agency
USP
API family
methotrexate
manufacturer/tradename
USP
ε (extinction coefficient)
24,500 at 282 nm in 0.1 M NaOH at 1 M, 25,700 at 261 nm in 0.1 M NaOH at 1 M, 8,100 at 373 nm in 0.1 M NaOH at 1 M
application(s)
pharmaceutical (small molecule)
format
neat
SMILES string
Nc1nc(N)c2nc(CNc3ccc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O)cnc2n1
InChI
1S/C19H20N8O5/c20-15-14-16(27-19(21)26-15)23-8-11(24-14)7-22-10-3-1-9(2-4-10)17(30)25-12(18(31)32)5-6-13(28)29/h1-4,8,12,22H,5-7H2,(H,25,30)(H,28,29)(H,31,32)(H4,20,21,23,26,27)/t12-/m0/s1
InChI key
TVZGACDUOSZQKY-LBPRGKRZSA-N
General description
Find answers to frequently asked questions on USP products in USP FAQs.
This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.
Application
Methotrexate Related Compound B USP reference standard for use in specified quality tests and assays.
Additionally used to prepare standard, standard stock, system suitability, and system suitability stock solutions for impurity analysis in the given below monographs according to United States Pharmacopeia (USP):
Additionally used to prepare standard, standard stock, system suitability, and system suitability stock solutions for impurity analysis in the given below monographs according to United States Pharmacopeia (USP):
- Methotrexate
- Methotrexate Injection
- Methotrexate for Injection
Biochem/physiol Actions
与二氢叶酸还原酶结合并抑制其活性的叶酸拮抗剂。
叶酸拮抗剂。氨基蝶呤是由叶酸转运蛋白运输至细胞内的。在细胞内，它被叶酰聚谷氨酸合酶转化为一种高分子量的聚谷氨酸盐代谢物，该产物又与二氢叶酸还原酶结合并抑制其活性。氨基蝶呤-聚谷氨酸盐经 γ-谷氨酰基水解酶作用发生细胞内降解。
Analysis Note
These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.
Other Notes
比甲氨喋呤更有效，但毒性也更强。
Sales restrictions may apply.
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signalword
Danger
Hazard Classifications
Acute Tox. 1 Oral - Eye Irrit. 2 - Muta. 2 - Repr. 1B - Skin Irrit. 2
存储类别
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable