Impurities
AY-0392-003
Methotrexate EP Impurity E
C15H15N7O2
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Impurity reference standard material
Methotrexate EP Impurity B
Material overview
Methotrexate EP Impurity B (AY-0392-002) — impurity reference standard material. CAS 54-62-6, formula C19H20N8O5, molecular weight 440.40 g/mol. Request technical documentation and current availability.
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Technical identifiers
- Catalog number
- AY-0392-002
- CAS number
- 54-62-6
- Molecular formula
- C19H20N8O5
- Molecular weight
- 440.40 g/mol
- Category
- Impurity reference standard material
- Chemical name
- (2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methylamino]benzoyl]amino]pentanedioic acid
- Synonyms
- N-Desmethyl Methotrexate; Methotrexate Related Compound B (USP); N-[4-[[(2,4-diamino-6-pteridinyl)methyl]amino]benzoyl]; N-[4-[[(2,4-Diamino-6-pteridinyl)methyl]amino]benzoyl]-L-glutamic acid; N-[p-[[(2,4-diamino-6-pteridinyl)methyl]amino]benzoyl]-
- SMILES
- C1=CC(=CC=C1C(=O)N[C@@H](CCC(=O)O)C(=O)O)NCC2=CN=C3C(=N2)C(=NC(=N3)N)N
- Appearance
- Dark Yellow Solid
- Light sensitive
- Yes
- Hygroscopic
- Yes
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