Impurities & Reference Standards
API Impurities
Source 1942 api impurities for research, QC and production, documented with COA and SDS.
14,098products
1,516in stock
COA + SDSwith every lot
2-(2,3-Dimethylphenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one
- CAS
- 118048-94-5
- Formula
- C12H14N2O
- MW
- 202.25 g/mol
VQ-036959
2-(2,4-Dichlorophenyl)-2-methyl-4-propyl-1,3-dioxolane
- CAS
- 83833-32-3
- Formula
- C13H16Cl2O2
- MW
- 275.17 g/mol
VQ-033365
2-(2,4-Difluorophenyl)-3-(5-fluoro-6-(1-(5-fluoropyrimidin-4-yl)ethyl)pyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol
- CAS
- 321589-00-8
- Formula
- C22H19F4N7O
- MW
- 473.4 g/mol
VQ-044590
2-(2,4-Dihydroxy-5-methoxybenzamido)-N-(2-(diisopropylamino)ethyl)thiazole-4-carboxamide
- CAS
- 738562-93-1
- Formula
- C20H28N4O5S
- MW
- 436.5 g/mol
VQ-021422
2-(2,4,5-Trimethoxybenzamido)thiazole-4-carboxylic Acid
- CAS
- 185106-01-8
- Formula
- C14H14N2O6S
- MW
- 338.34 g/mol
VQ-035602
2-(2H-Benzotriazol-2-yl)-6-(isobuten-1-yl)-p-cresol
- CAS
- 2170-37-8
- Formula
- C17H17N3O
- MW
- 279.34 g/mol
VQ-036824
![2-(3-((2-((3-Chlorophenyl)amino)ethyl)amino)propyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride chemical structure](/media/structures/BFMOXTDSILNYHP-UHFFFAOYSA-N.svg)
2-(3-((2-((3-Chlorophenyl)amino)ethyl)amino)propyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride
- CAS
- 220910-13-4
- Formula
- C17H21Cl2N5O
- MW
- 382.3 g/mol
VQ-042653
![2-(3-(2-(4-(1-(2-Ethoxyethyl)-1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)-2-methylpropanoic Acid chemical structure](/media/structures/YQBLDZMARIUXJI-UHFFFAOYSA-N.svg)
2-(3-(2-(4-(1-(2-Ethoxyethyl)-1H-benzo[d]imidazol-2-yl)piperidin-1-yl)ethyl)phenyl)-2-methylpropanoic Acid
- CAS
- 1215537-40-8
- Formula
- C28H37N3O3
- MW
- 463.6 g/mol
VQ-021833
![2-(3-(4-(1-(3-(Cyanomethyl)-1-(ethylsulfonyl)azetidin-3-yl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile chemical structure](/media/structures/JHFMCKHJCXIHNR-UHFFFAOYSA-N.svg)
2-(3-(4-(1-(3-(Cyanomethyl)-1-(ethylsulfonyl)azetidin-3-yl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile
- CAS
- 2402776-84-3
- Formula
- C23H27N9O4S2
- MW
- 557.7 g/mol
VQ-029354
![2-(3-(4-(7H-[4,7'-Bipyrrolo[2,3-d]pyrimidin]-4'-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile chemical structure](/media/structures/VQLDZYHZBDVCHK-UHFFFAOYSA-N.svg)
2-(3-(4-(7H-[4,7'-Bipyrrolo[2,3-d]pyrimidin]-4'-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile
- CAS
- 2910813-45-3
- Formula
- C22H20N10O2S
- MW
- 488.5 g/mol
VQ-044448
![2-(3-(4-Bromophenyl)benzo[c]isoxazol-7-yl)acetic Acid](/media/pack/2-3-4-bromophenylbenzocisoxazol-7-ylacetic-acid.svg?v=3)
2-(3-(4-Bromophenyl)benzo[c]isoxazol-7-yl)acetic Acid
- CAS
- 114623-14-2
- Formula
- C15H10BrNO3
- MW
- 332.15 g/mol
VQ-029526
2-(3-(Bromomethyl)-5-(1-cyanoethyl)phenyl)-2-methylpropanenitrile
- CAS
- 2518116-15-7
- Formula
- C14H15BrN2
- MW
- 291.19 g/mol
VQ-035738
2-(3-(Diisopropylamino)-1-phenylpropyl)-4-((isobutyryloxy)methyl)phenyl isobutyrate Fumarate
- CAS
- 1428856-48-7
- Formula
- C34H47NO8
- MW
- 597.7 g/mol
VQ-037244
2-(3-(Diisopropylamino)-1-phenylpropyl)-4-formylphenyl Isobutyrate
- CAS
- 1333234-71-1
- Formula
- C26H35NO3
- MW
- 409.6 g/mol
VQ-022642
![2-(3-(Trifluoromethyl)-4,4a-dihydrospiro[cyclopropa[3,4]cyclopenta[1,2-c]pyrazole-5,2'-[1,3]dithiolane]-1(3bH)-yl)acetic Acid chemical structure](/media/structures/ORSDYEQOZVGXJE-UHFFFAOYSA-N.svg)
2-(3-(Trifluoromethyl)-4,4a-dihydrospiro[cyclopropa[3,4]cyclopenta[1,2-c]pyrazole-5,2'-[1,3]dithiolane]-1(3bH)-yl)acetic Acid
- CAS
- 2189684-51-1
- Formula
- C12H11F3N2O2S2
- MW
- 336.4 g/mol
VQ-048822
![2-(3-(Trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)acetohydrazide chemical structure](/media/structures/BBSLTTGZCGTURG-UHFFFAOYSA-N.svg)
2-(3-(Trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)acetohydrazide
- CAS
- 1485732-85-1
- Formula
- C8H11F3N6O
- MW
- 264.21 g/mol
VQ-028060
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