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
![4,6-Dimethyl-2H,8H-pyrano[3,2-g]chromene-2,8-dione chemical structure](/media/structures/IRLAJOZCRMAKKA-UHFFFAOYSA-N.svg)
4,6-Dimethyl-2H,8H-pyrano[3,2-g]chromene-2,8-dione
- CAS
- 54107-67-4
- Formula
- C14H10O4
- MW
- 242.23 g/mol
VQ-040700
![4,6-Quinazolinediamine, N4-[3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)phenyl] chemical structure](/media/structures/ZZELBUZMHIDULQ-UHFFFAOYSA-N.svg)
4,6-Quinazolinediamine, N4-[3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)phenyl]
- CAS
- 2307628-67-5
- Formula
- C21H17N7O
- MW
- 383.4 g/mol
VQ-023942
![4,6,7,8,9,10-Hexahydro-1H-6,10-methanoazepino[4,5-g]quinoxaline-2,3-dione hydrochloride chemical structure](/media/structures/WPQFNRPPXPNQEK-UHFFFAOYSA-N.svg)
4,6,7,8,9,10-Hexahydro-1H-6,10-methanoazepino[4,5-g]quinoxaline-2,3-dione hydrochloride
- CAS
- 1350219-74-7
- Formula
- C13H14ClN3O2
- MW
- 279.72 g/mol
VQ-042824
![4'-((1,7'-Dimethyl-2'-propyl-1H,1'H-[2,5'-bibenzo[d]imidazol]-1'-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile chemical structure](/media/structures/LAFCDSCLGACVHG-UHFFFAOYSA-N.svg)
4'-((1,7'-Dimethyl-2'-propyl-1H,1'H-[2,5'-bibenzo[d]imidazol]-1'-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile
- CAS
- 1338830-39-9
- Formula
- C33H29N5
- MW
- 495.6 g/mol
VQ-034083
![4'-((2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl)-N-(4,5-dimethylisoxazol-3-yl)-2'-(ethoxymethyl)-N-(methoxymethyl)-[1,1'-biphenyl]-2-sulfonamide chemical structure](/media/structures/XYWGCTPPRWEYNN-UHFFFAOYSA-N.svg)
4'-((2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl)-N-(4,5-dimethylisoxazol-3-yl)-2'-(ethoxymethyl)-N-(methoxymethyl)-[1,1'-biphenyl]-2-sulfonamide
- CAS
- 1026355-73-6
- Formula
- C34H44N4O6S
- MW
- 636.8 g/mol
VQ-028098
![4'-((2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl)-N-(4,5-dimethylisoxazol-3-yl)-2'-formyl-[1,1'-biphenyl]-2-sulfonamide chemical structure](/media/structures/SOCXXLMIWNNNRI-UHFFFAOYSA-N.svg)
4'-((2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl)-N-(4,5-dimethylisoxazol-3-yl)-2'-formyl-[1,1'-biphenyl]-2-sulfonamide
- CAS
- 254737-96-7
- Formula
- C30H34N4O5S
- MW
- 562.7 g/mol
VQ-033934
![4'-((2-Ethoxy-7-(methoxycarbonyl)-1H-benzo[d]imidazol-1-yl)methyl)-[1,1'-biphenyl]-2-carboxylic Acid chemical structure](/media/structures/GDLRDIRLOKCOSZ-UHFFFAOYSA-N.svg)
4'-((2-Ethoxy-7-(methoxycarbonyl)-1H-benzo[d]imidazol-1-yl)methyl)-[1,1'-biphenyl]-2-carboxylic Acid
- CAS
- 1675221-59-6
- Formula
- C25H22N2O5
- MW
- 430.5 g/mol
VQ-024079
![4'-(Azidomethyl)-[1,1'-biphenyl]-2-carboxylic acid chemical structure](/media/structures/YZZMRXRBOGEUQD-UHFFFAOYSA-N.svg)
4'-(Azidomethyl)-[1,1'-biphenyl]-2-carboxylic acid
- CAS
- 2758005-15-9
- Formula
- C14H11N3O2
- MW
- 253.26 g/mol
VQ-026998
![4'-(Azidomethyl)[1,1'-biphenyl]-2-carboxamide chemical structure](/media/structures/CITOWHKJBDXBBF-UHFFFAOYSA-N.svg)
![4'-(Chloromethyl)-[1,1'-Biphenyl]-2-carbonitrile chemical structure](/media/structures/CVUSOECAQURLLN-UHFFFAOYSA-N.svg)
4'-(Chloromethyl)-[1,1'-Biphenyl]-2-carbonitrile
- CAS
- 136304-93-3
- Formula
- C14H10ClN
- MW
- 227.69 g/mol
VQ-027185
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