Impurity Reference Standards

API Impurities

Process impurities, isomers, degradants and related compounds for thousands of APIs, characterised for method development, validation and QC release.

9,055 products1,019 in stockCOA + SDS with every lot

9,055 products · page 63 of 378

Grid List

2-((2,3,4-Trichloro-6-nitrobenzyl)amino)acetic acid ethyl ester

CAS: 2187431-30-5
Formula: C₁₃H₁₂N₂Na₂O₁₄S₂
MW: 530.4 g/mol

ZX-023295

2-((2,4-Aimethylphenyl)amino)benzoic Acid

CAS: 27210-58-8
Formula: C₁₅H₁₅NO₂
MW: 241.28 g/mol

ZX-030478

2-((2,5-Dimethylphenyl)amino)benzoic Acid

CAS: 21193-38-4
Formula: C₁₅H₁₅NO₂
MW: 241.28 g/mol

ZX-030479

2-((2,6-Difluorobenzyl)amino)-4-((dimethylamino)methyl)-N-(6-methoxypyridazin-3-yl)-5-(4-(3-methoxyureido)phenyl)thiophene-3-carboxamide

CAS: 2814571-33-8
Formula: C₂₈H₂₉F₂N₇O₄S
MW: 597.6 g/mol

ZX-026678

2-((2,6-Dimethylphenyl)amino)-2-oxoacetic acid

CAS: 2903-48-2
Formula: C₁₀H₁₁NO₃
MW: 193.2 g/mol

ZX-033728

2-((3BR,4aS)-5,5-Difluoro-3-(trifluoromethyl)-3b,4,4a,5-tetrahydro-1H-cyclopropa[3,4]cyclopenta[1,2-c]pyrazol-1-yl)acetic acid

CAS: 2189680-65-5
Formula: C₁₀H₇F₅N₂O₂
MW: 282.17 g/mol

ZX-030200

2-((3BS,4aR)-5,5-Difluoro-3-(trifluoromethyl)-3b,4,4a,5-tetrahydro-1H-cyclopropa[3,4]cyclopenta[1,2-c]pyrazol-1-yl)acetic Acid

CAS: 1620056-83-8
Formula: C₁₀H₇F₅N₂O₂
MW: 282.17 g/mol

ZX-030201

2-((4-Methylpiperazin-1-yl)methyl)benzonitrile

CAS: 864069-00-1
Formula: C₁₃H₁₇N₃
MW: 215.29 g/mol

ZX-025085

2-((6-((4-(tert-Butyl)phenyl)sulfonamido)-5-(2-methoxyphenoxy)-[2,2'-bipyrimidin]-4-yl)oxy)ethyl Acetate

CAS: 1160515-53-6
Formula: C₂₉H₃₁N₅O₇S
MW: 593.7 g/mol

ZX-023609

2-((6-(4-Methoxyphenoxy)pyrimidin-4-yl)(methyl)amino)ethan-1-ol

CAS: 607723-69-3
Formula: C₁₄H₁₇N₃O₃
MW: 275.3 g/mol

ZX-030328

2-((6-Amino-5-(4-bromophenyl)pyrimidin-4-yl)oxy)ethanol

CAS: 2211059-05-9
Formula: C₁₂H₁₂BrN₃O₂
MW: 310.15 g/mol

ZX-022045

2-((6-Chloro-3-ethyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)benzonitrile

CAS: 1430222-06-2
Formula: C₁₄H₁₂ClN₃O₂
MW: 289.71 g/mol

ZX-023076

2-((6,7-Dimethoxyquinolin-4-yl)oxy)aniline

CAS: 190728-27-9
Formula: C₁₇H₁₆N₂O₃
MW: 296.32 g/mol

ZX-028401

2-((6S,8S,9R,10S,11S,13S,14S,17R)-9-Fluoro-11,17-dihydroxy-6,10,13-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl Methanesulfonate

CAS: 2796-99-8
Formula: C₂₃H₃₁FO₇S
MW: 470.6 g/mol

ZX-029567

2-((7-Cyclopentyl-6-(dimethylcarbamoyl)-7H-pyrrolo[2,3-d]pyrimidin-2-yl)amino)-5-(piperazin-1-yl)pyridine 1-Oxide

CAS: 2069953-39-3
Formula: C₂₃H₃₀N₈O₂
MW: 450.5 g/mol

ZX-032173

2-((R)-1-((R)-2-(2,4-Difluorophenyl)oxiran-2-yl)ethoxy)tetrahydro-2H-pyran

CAS: 135267-12-8
Formula: C₁₅H₁₈F₂O₃
MW: 284.3 g/mol

ZX-029183

2-(1-(2-Ethoxyethyl)piperidin-4-yl)-1H-benzo[d]imidazole

CAS: 2807304-46-5
Formula: C₁₆H₂₃N₃O
MW: 273.37 g/mol

ZX-023572

2-(1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl)-4-nitroisoindoline-1,3-dione

CAS: 253168-82-0
Formula: C₂₀H₂₀N₂O₈S
MW: 448.4 g/mol

ZX-028055

2-(1-(Ethylsulfonyl)azetidin-3-ylidene)acetonitrile

CAS: 1187595-85-2
Formula: C₇H₁₀N₂O₂S
MW: 186.23 g/mol

ZX-023490

2-(1-Adamantyl)-4-bromoanisole

CAS: 104224-63-7
Formula: C₁₇H₂₁BrO
MW: 321.3 g/mol

ZX-019800

2-(1-Trityl-1H-imidazol-4-yl)-1H-indene-1,3(2H)-dione

CAS: 1160219-68-0
Formula: C₃₁H₂₂N₂O₂
MW: 454.5 g/mol

ZX-027819

2-(1,2,3,4-Tetrahydronaphthalen-1-yl)-1H-imidazole

CAS: 945389-41-3
Formula: C₁₃H₁₄N₂
MW: 198.26 g/mol

ZX-027209

2-(1,6,7,8-Tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethan-1-amine hydrochloride

CAS: 1053239-39-6
Formula: C₁₃H₁₈ClNO
MW: 239.74 g/mol

ZX-026638

2-(10H-Benzo[b]pyrido[2,3-e][1,4]thiazin-10-yl)-N,N-dimethylpropan-1-amine Hydrochloride

CAS: 132962-42-6
Formula: C₁₆H₂₀ClN₃S
MW: 321.9 g/mol

ZX-030025

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list