Pharmaceutical Reference Standards / Impurity Standards

Methotrexate Hydrate
Methotrexate Disodium Salt
Methotrexate base
Methotrexate Form 1
Methotrexate EP Impurity C
Methotrexate EP Impurity J
Methotrexate Impurity B Hydrate
Methotrexate EP Impurity E
Methotrexate EP Impurity D
(2,4-diaminopteridin-6-yl)methanol Hydrochloride
Methotrexate EP Impurity A
2,4-Diamino-6-(hydroxymethyl)pteridine Hydrochloride
Methotrexate EP Impurity E
Methotrexate EP Impurity F
N-(4-N-Methylaminobenzoyl)-L-glutamic acid diethyl ester
Methotrexate Impurity 9
Methotrexate EP Impurity I
Methotrexate EP Impurity H
Methotrexate Dimethylamide
4-Aminodeoxopteroic Acid
Methotrexate EP Impurity G
Methotrexate EP Impurity L Disodium Salt
2-amino-6-(chloromethyl) pteridin-4(1H)-one
Folic Acid Impurity 24
Dimethyl Glutamate
(R)-Dimethyl 2-aminopentanedioate
D-glutamic Acid Diethyl Ester
(4S)-4-amino-5-(dimethylamino)-5-oxopentanoic acid
Methotrexate 7-Hydroxy
2,4-Diaminopteridine
2,4-Diamino-6-methylpteridine
N-(4-chlorobenzoyl)-L-glutamic Acid
Diethyl 2-(4-aminobenzamido)pentanedioate
Diethyl(2S)-2-((4-(ethylamino)benzoyl)amino)pentanedioate
Diethyl(2S)-2-((2-(methylamino)benzoyl)amino)pentanedioate
Diethyl(2S)-2-((3-(methylamino)benzoyl)amino)pentanedioate
2,4-diamino-7-methylpteridine hemi hydrochloride
Methotrexate EP Impurity L
N-Nitroso Methotrexate
Methotrexate Dimethylester Hydrochloride
N-Nitroso Methotrexate EP Impurity-B
N-Nitroso Methotrexate EP Impurity L
N-(4-(methyl(nitroso)amino)benzoyl)-N-nitroso-L-glutamic acid
Methotrexate Impurity 4
Methotrexate Impurity 11
Methotrexate Impurity 12
(S)-diethyl-2-(4-(methyl(nitroso)amino)benzamido)pentanedioate
(R)-diethyl-2-(4-(methyl(nitroso)amino)benzamido)pentanedioate
(S)-2-(4-(N-((2,4-diaminopteridin-6-yl)methyl)formamido)benzamido)pentanedioic acid
Methotrexate Impurity 13
Methotrexate Impurity 14
Methotrexate Impurity 15
Methotrexate Impurity 16
Methotrexate Impurity B Disodium Salt
N-Nitroso Methotrexate
4-Aminobenzoyl D-Glutamic Acid
Methotrexate Impurity 6
N-Nitroso Methotrexate EP Impurity B D6
(S)-1-ethyl 5-methyl 2-(4-(((2,4-diaminopteridin-6-yl)methyl)(methyl)amino)benzamido)pentanedioate
(S)-5-ethyl 1-methyl2-(4-(((2,4-diaminopteridin-6-yl)methyl)(methyl)amino)benzamido)pentanedioate
Methotrexate Diethyl Ester

Isotope Labelled Compounds

Methotrexate-D3
Methotrexate -13C,D3