Product division
Impurities & Reference Standards
Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.
28,554products
6sub-categories
2,746in stock
COA + SDSwith every lot
API Impurities 14,252Pharmacopeial Impurities (EP / USP / BP) 4,401Nitrosamine Impurities 650Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612Metabolites & Degradation Products 4,146API Reference Standards 3,493
![4''-(Pentyloxy)-[1,1':4',1''-terphenyl]-4-carboxylic Acid chemical structure](/media/structures/APIUMVXKBCYBSC-UHFFFAOYSA-N.svg)
4''-(Pentyloxy)-[1,1':4',1''-terphenyl]-4-carboxylic Acid
- CAS
- 158938-08-0
- Formula
- C24H24O3
- MW
- 360.4 g/mol
VQ-043797
42-O-tert-Butyldimethylsilyloxyethyl Rapamycin
- CAS
- 159351-68-5
- Formula
- C59H97NO14Si
- MW
- 1072.5 g/mol
VQ-030640
4H-1-Benzopyran-4-one,5,7-dihydroxy-3-(5-hydroxy-2,2-dimethyl-2H-1-benzopyran-6-yl)
- CAS
- 66056-30-2
- Formula
- C20H16O6
- MW
- 352.3 g/mol
VQ-050773
![4H-Benzo[4,5]cyclohepta[1,2-b]thiophen-4-one chemical structure](/media/structures/AKYJPOPHGMQXHH-UHFFFAOYSA-N.svg)
![4H-Imidazo[4,5-d][1,2,3]triazin-4-one chemical structure](/media/structures/IJYHVZICHKCLMQ-UHFFFAOYSA-N.svg)
5 2 Ethylthio propyl 3 hydroxy 2 propionylcyclohex 2 en 1 one
- CAS
- 111031-74-4
- Formula
- C14H22O3S
- MW
- 270.39 g/mol
VQ-036367
5 4 Fluorophenyl 2 isopropyl N 4 diphenyl 1h pyrrole 3 carboxamide
- CAS
- 666714-64-3
- Formula
- C26H23FN2O
- MW
- 398.5 g/mol
VQ-035242
![5- Bromobenzo[b]thiophene chemical structure](/media/structures/RDSIMGKJEYNNLF-UHFFFAOYSA-N.svg)
5-(((2-Hydroxyethoxy)methyl)amino)-2-imino-2,3-dihydro-4H-imidazol-4-one
- CAS
- 874769-59-2
- Formula
- C6H10N4O3
- MW
- 186.17 g/mol
VQ-047332
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.