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
![(4S)-4-[(4-Nitrophenyl)methyl]-2-oxazolidinone chemical structure](/media/structures/CCEJPIYBVGYGEM-QMMMGPOBSA-N.svg)
(4S)-4-Amino-2,6-dimethyl-1-hepten-3-one 2,2,2-Trifluoroacetate
- CAS
- 1619233-32-7
- Formula
- C11H18F3NO3
- MW
- 269.26 g/mol
VQ-029647
(4Z,7Z,10Z,13Z,16Z)-Nonadeca-4,7,10,13,16-pentaenoic Acid
- CAS
- 136156-13-3
- Formula
- C19H28O2
- MW
- 288.4 g/mol
VQ-048159
(5-(2-Fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl)methanamine
- CAS
- 1807642-41-6
- Formula
- C16H14FN3O2S
- MW
- 331.4 g/mol
VQ-034678
(5-(2-Fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl)methanol
- CAS
- 2169271-28-5
- Formula
- C16H13FN2O3S
- MW
- 332.4 g/mol
VQ-024025
(5-(4-Fluorophenyl)thiophen-2-yl)(5-iodo-2-methylphenyl)methanol
- CAS
- 1818268-45-9
- Formula
- C18H14FIOS
- MW
- 424.3 g/mol
VQ-029595
![(5-Amino-2-butyl-3-benzofuranyl)[4-[3-(dibutylamino)propoxy]phenyl]methanone chemical structure](/media/structures/SPIIBUQYWNFELT-UHFFFAOYSA-N.svg)
(5-Amino-2-butyl-3-benzofuranyl)[4-[3-(dibutylamino)propoxy]phenyl]methanone
- CAS
- 141644-91-9
- Formula
- C30H42N2O3
- MW
- 478.7 g/mol
VQ-030316
(5-Bromo-2-chlorophenyl)(2-methoxyphenyl)methanone
- CAS
- 1771251-94-5
- Formula
- C14H10BrClO2
- MW
- 325.58 g/mol
VQ-040675
(5-Bromo-2-chlorophenyl)(4- ethoxyphenyl)methanol
- CAS
- 1280647-32-6
- Formula
- C15H14BrClO2
- MW
- 341.62 g/mol
VQ-025173
(5-Bromo-2-chlorophenyl)(4-(((S)-tetrahydrofuran-3-yl)oxy)phenyl)methanol
- CAS
- 1800196-43-3
- Formula
- C17H16BrClO3
- MW
- 383.7 g/mol
VQ-035181
(5-Bromo-2-chlorophenyl)(4-fluorophenyl)methanol
- CAS
- 1280718-70-8
- Formula
- C13H9BrClFO
- MW
- 315.56 g/mol
VQ-030461
(5-Ethyl-1H-imidazol-4-yl)methanol hydrochloride
- CAS
- 38603-74-6
- Formula
- C6H11ClN2O
- MW
- 162.62 g/mol
VQ-021159
![(5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 2-ethoxy-1-((2'-(5-ethoxy-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylate chemical structure](/media/structures/FNBBUJVGGJFAMY-UHFFFAOYSA-N.svg)
(5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 2-ethoxy-1-((2'-(5-ethoxy-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylate
- CAS
- 2741865-60-9
- Formula
- C32H28N4O8
- MW
- 596.6 g/mol
VQ-029334
(5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 4-methylbenzenesulfonate
- CAS
- 91526-16-8
- Formula
- C12H12O6S
- MW
- 284.29 g/mol
VQ-035894
![(5-PyriMidinecarboxylicacid, 4-[[(3-chloro-4-Methoxyphenyl)Methyl]aMino]-2-(Methylthio)-,ethyl ester) chemical structure](/media/structures/WLOQDGSMJNYRRC-UHFFFAOYSA-N.svg)
(5-PyriMidinecarboxylicacid, 4-[[(3-chloro-4-Methoxyphenyl)Methyl]aMino]-2-(Methylthio)-,ethyl ester)
- CAS
- 330785-81-4
- Formula
- C16H18ClN3O3S
- MW
- 367.9 g/mol
VQ-045253
Need a price, a spec or a custom compound?
Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.