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Tramadol EP Impurity D
Tramadol EP Impurity D

CAT No: ALL-TRA-535

Chemical Name: (1RS,2RS)-2-[(dimet...

Molecular Formula: C15H23NO2

Molecular Weight: 249.4

CAS Number: 73986-53-5 ; 16412-54-7 (HCl salt)

Tramadol EP Impurity C
Tramadol EP Impurity C

CAT No: ALL-TRA-318

Chemical Name: [(1RS)-2-(3-methoxy...

Molecular Formula: C16H23NO : HCl

Molecular Weight: 245.4 : 36.5

CAS Number: 66170-31-8 ; 192384-41-1 (free base)

Tramadol EP Impurity B
Tramadol EP Impurity B

CAT No: ALL-TRA-329

Chemical Name: [2-(3-methoxyphenyl...

Molecular Formula: C16H23NO : HCl

Molecular Weight: 245.4 : 36.5

CAS Number: 66170-32-9 ; 73825-64-6 (free base)

Tramadol EP Impurity A
Tramadol EP Impurity A

CAT No: ALL-TRA-492

Chemical Name: (1RS,2SR)-2-[(dimet...

Molecular Formula: C16H25NO2 : HCl

Molecular Weight: 263.4 : 36.5

CAS Number: 73806-49-2 ; 152538-36-8 (free base)

Methotrexate Dimethylamide
Methotrexate Dimethylamide

CAT No: ALL-MET-447

Chemical Name: (S)-2-(4-(((2,4-Diam...

Molecular Formula: C22H27N9O4

Molecular Weight: 481.51

CAS Number: 71074-44-7

Methotrexate 7-Cyano Dimethyl Ester
Methotrexate 7-Cyano Dimethyl Ester

CAT No: ALL-MET-390

Chemical Name: (S)-Dimethyl 2-(4-((...

Molecular Formula: C23H25N9O5

Molecular Weight: 507.5

CAS Number: 112163-39-0

Methotrexate α-tert-Butyl Ester
Methotrexate α-tert-Butyl Ester

CAT No: ALL-MET-703

Chemical Name: (S)-5-tert-Butoxy-4-...

Molecular Formula: C24H30N8O5

Molecular Weight: 510.55

CAS Number: 79640-70-3

Methotrexate EP Impurity H
Methotrexate EP Impurity H

CAT No: ALL-MET-393

Chemical Name: (2S)-2-[[4-[[(2,4-Di...

Molecular Formula: C21H24N8O5

Molecular Weight: 468.47

CAS Number: 67022-39-3

Methotrexate EP Impurity L
Methotrexate EP Impurity L

CAT No: ALL-MET-684

Chemical Name: (2S)-2-[[4-(Methylam...

Molecular Formula: C13H16N2O5 (diacid); C13H14N2Na2O5 (disodium salt)

Molecular Weight: 280.28; 324.24

CAS Number: 52980-68-4 (diacid)

Methotrexate EP Impurity K
Methotrexate EP Impurity K

CAT No: ALL-MET-301

Chemical Name: (2S)-2-[(4-Aminobenz...

Molecular Formula: C12H14N2O5

Molecular Weight: 266.25

CAS Number: 4271-30-1

Methotrexate EP Impurity I
Methotrexate EP Impurity I

CAT No: ALL-MET-293

Chemical Name: (4S)-4-[[4-[[(2,4-Di...

Molecular Formula: C21H24N8O5 ;

Molecular Weight: 468.47

CAS Number: 66147-29-3

Methotrexate EP Impurity J
Methotrexate EP Impurity J

CAT No: ALL-MET-659

Chemical Name: Dimethyl(2S)-2-[[4-[...

Molecular Formula: C22H26N8O5

Molecular Weight: 482.49

CAS Number: 34378-65-9