7-Hydroxy Methotrexate ; 7-Hydroxy Amethopterin ; 4-Amino-7-hydroxy-10-methylpteroylglutamic acid ; CAS # 5939-37-7 ;

(2S)-2-[[4-[[(2,4-Diaminopteridin-6-yl)methyl]methylamino]benzoyl] amino] pentanedioic acid ; CAS # 59-05-2 ;

2,4-Diamino-6-(hydroxymethyl) pteridine ; 2,4-Diamino-6-pteridinemethanol ; CAS # 945-24-4 ;

Methotrexate USP RC B ; N-Desmethyl Methotrexate ; 4-Aminofolic Acid ; Aminopteridine ; Aminopterin ; CAS # 54-62-6 ;

Methotrexate USP RC C ; N-Methylfolic acid ; Methopteridine ; Methotrextae 4-Oxo Analog ; CAS # 2410-93-7 ;

N10-Methylpteroic acid ; CAS # 5623-18-7 ;

Folic Acid EP Impurity D ; Pteroic Acid ; 4-[[(2-Amino-4-hydroxypteridin-6-yl)methyl]amino]benzoic acid ; CAS # 119-24-4 ;

Methotrexate USP RC E ; 2,4-Diamino-N10-methylpterioc acid ; CAS # 70844-48-3 (hemihydrochloride salt ) ;

Methotrexate USP RC E (HCl Salt) ; 2,4-Diamino-N10-methylpterioc acid hemihydrochloride salt ; CAS # 70844-48-3 ;

(R)-Methotrexate ;

(2S)-2-[[4-[[4-[[(2,4-Diaminopteridin-6-yl)methyl]methylamino]benzoyl]methylamino]benzoyl]amino]pentanedioic acid ;

Methotrexate 5-Methyl Ester ; Methotrexate γ-Methyl Ester ; (2S)-2-[[4-[[(2,4-Diaminopteridin-6-yl)methyl]methylamino]benzoyl]amino]-5-methoxy-5-oxopentanoic acid ; CAS # 67022-39-3 ;

Methotrexate 1-Methyl Ester ; Methotrexate α-Methyl Ester ; (4S)-4-[[4-[[(2,4-Diaminopteridin-6-yl)methyl]methylamino]benzoyl]amino]-5-methoxy-5-oxopentanoic acid ; CAS # 66147-29-3 ;

Methotrexate Dimethyl Ester ; N-[4-[[(2,4-Diamino-6-pteridinyl)methyl]methylamino]benzoyl]-L-glutamic acid dimethyl ester ; Dimethyl Methotrexate ; CAS # 34378-65-9 ;

(2S)-2-[(4-Aminobenzoyl)amino]pentanedioic acid ; N-(4-Aminobenzoyl)-L-glutamic Acid ; CAS # 4271-30-1 ;

(2S)-2-[[4-(Methylamino)benzoyl]amino]pentanedioic acid disodium salt ; CAS # 52980-68-4 (diacid) ;