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-Thiazolidinecarboxylic acid, 5,5-dimethyl-2-[[[(5-methyl-3-phenyl-4-isoxazolyl)carbonyl]amino]methyl]-, (4S) chemical structure](/media/structures/ICRVMGBWGWYAFF-CVRLYYSRSA-N.svg)
4-Thiazolidinecarboxylic acid, 5,5-dimethyl-2-[[[(5-methyl-3-phenyl-4-isoxazolyl)carbonyl]amino]methyl]-, (4S)
- CAS
- 1642559-63-4
- Formula
- C18H21N3O4S
- MW
- 375.4 g/mol
VQ-027321
4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one
- CAS
- 33549-66-5
- Formula
- C4H4Br2N2O
- MW
- 255.9 g/mol
VQ-041090
4,4-Difluoro-1-(3-fluoro-4-methoxyphenyl)butane-1,3-dione
- CAS
- 170570-77-1
- Formula
- C11H9F3O3
- MW
- 246.18 g/mol
VQ-036617
![4,4,4-Trifluoro-1-[2-(methyl)phenyl]-butane-1,3-dione chemical structure](/media/structures/NSWJGKUEKYWEEF-UHFFFAOYSA-N.svg)
4,4,4-Trifluoro-1-[2-(methyl)phenyl]-butane-1,3-dione
- CAS
- 163266-02-2
- Formula
- C11H9F3O2
- MW
- 230.18 g/mol
VQ-029722
![4,4,4-Trifluoro-1-[3-(methyl)phenyl]-butane-1,3-dione chemical structure](/media/structures/VOFWLZQTWRLBTR-UHFFFAOYSA-N.svg)
4,4,4-Trifluoro-1-[3-(methyl)phenyl]-butane-1,3-dione
- CAS
- 53764-99-1
- Formula
- C11H9F3O2
- MW
- 230.18 g/mol
VQ-024896
![4,4'-((2,2'-Bis(hydroxymethyl)-[1,1'-biphenyl]-4,4'-diyl)bis(oxy))dibenzonitrile chemical structure](/media/structures/UWNXSZBSYAINRD-UHFFFAOYSA-N.svg)
4,4'-((2,2'-Bis(hydroxymethyl)-[1,1'-biphenyl]-4,4'-diyl)bis(oxy))dibenzonitrile
- CAS
- 2254541-79-0
- Formula
- C28H20N2O4
- MW
- 448.5 g/mol
VQ-025090
![4,4'-((2S,3S,5S,8R,9S,10S,13S,14S,16S,17R)-3-Acetoxy-17-hydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-2,16-diyl)bis(1,1-dimethylpiperazin-1-ium) Bromide chemical structure](/media/structures/PVWXVILDNMIWKS-GMMLHHOXSA-L.svg)
4,4'-((2S,3S,5S,8R,9S,10S,13S,14S,16S,17R)-3-Acetoxy-17-hydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-2,16-diyl)bis(1,1-dimethylpiperazin-1-ium) Bromide
- CAS
- 74395-81-6
- Formula
- C33H60Br2N4O3
- MW
- 720.7 g/mol
VQ-033202
![4,4'-((2S,3S,5S,8R,9S,10S,13S,14S,16S,17R)-3,17-Dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-2,16-diyl)bis(1,1-dimethylpiperazin-1-ium) Bromide chemical structure](/media/structures/OPIHWYWWYRZKNF-LKRYSLHCSA-L.svg)
4,4'-((2S,3S,5S,8R,9S,10S,13S,14S,16S,17R)-3,17-Dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-2,16-diyl)bis(1,1-dimethylpiperazin-1-ium) Bromide
- CAS
- 74133-45-2
- Formula
- C31H58Br2N4O2
- MW
- 678.6 g/mol
VQ-033201
![4,4'-([1,1'-Biphenyl]-4,4'-diylbis(methylene))bis(thiomorpholine 1,1-dioxide)](/media/pack/44-11-biphenyl-44-diylbismethylenebisthiomorpholine-11-dioxide.svg?v=3)
4,4'-([1,1'-Biphenyl]-4,4'-diylbis(methylene))bis(thiomorpholine 1,1-dioxide)
- CAS
- 2756973-43-8
- Formula
- C22H28N2O4S2
- MW
- 448.6 g/mol
VQ-037262
4,4'-(2,5-Dioxopiperazine-1,4-diyl)dibenzonitrile
- CAS
- 2733025-09-5
- Formula
- C18H12N4O2
- MW
- 316.3 g/mol
VQ-045077
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