Skip to content

Product division

Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

1-(Benzo[b]thiophen-4-yl)piperazine Hydrochloride chemical structure

1-(Benzo[b]thiophen-4-yl)piperazine Hydrochloride

CAS: 913614-18-3
Formula: C₁₂H₁₅ClN₂S
MW: 254.78 g/mol

VQ-024631

Reference Standard

1-(Benzo[b]thiophen-7-yl)piperazine Hydrochloride

1-(Benzo[b]thiophen-7-yl)piperazine Hydrochloride

CAS: 105684-41-1
Formula: C₁₂H₁₅ClN₂S
MW: 254.78 g/mol

VQ-029496

Reference Standard

1-(Benzo[d][1,3]dioxol-5-yl)-4,4-dimethylpentan-3-ol chemical structure

1-(Benzo[d][1,3]dioxol-5-yl)-4,4-dimethylpentan-3-ol

CAS: 106175-03-5
Formula: C₁₄H₂₀O₃
MW: 236.31 g/mol

VQ-023795

Reference Standard

1-(Benzofuran-4-yl)piperazine hydrochloride chemical structure

1-(Benzofuran-4-yl)piperazine hydrochloride

CAS: 105684-85-3
Formula: C₁₂H₁₅ClN₂O
MW: 238.71 g/mol

VQ-029495

Reference Standard

1-(Bis(4-fluorophenyl)methyl)-4-nitrosopiperazine chemical structure

1-(Bis(4-fluorophenyl)methyl)-4-nitrosopiperazine

CAS: 141528-78-1
Formula: C₁₇H₁₇F₂N₃O
MW: 317.33 g/mol

VQ-048414

Reference Standard

1-(Bromomethyl)-3,5-dimethylbenzene chemical structure

1-(Bromomethyl)-3,5-dimethylbenzene

CAS: 27129-86-8
Formula: C₉H₁₁Br
MW: 199.09 g/mol

VQ-029165

Reference Standard

1-(Bromomethyl)-4-chlorobenzene chemical structure

1-(Bromomethyl)-4-chlorobenzene

CAS: 622-95-7
Formula: C₇H₆BrCl
MW: 205.48 g/mol

VQ-044549

Reference Standard

1-(But-3-en-1-yl)-4-(2,3-dichlorophenyl)piperazine chemical structure

1-(But-3-en-1-yl)-4-(2,3-dichlorophenyl)piperazine

CAS: 1424857-93-1
Formula: C₁₄H₁₈Cl₂N₂
MW: 285.2 g/mol

VQ-020823

Reference Standard

1-(Chloroacetyl)-2-(trifluoroacetyl)hydrazine chemical structure

1-(Chloroacetyl)-2-(trifluoroacetyl)hydrazine

CAS: 762240-99-3
Formula: C₄H₄ClF₃N₂O₂
MW: 204.53 g/mol

VQ-033873

Reference Standard

1-(Chloroacetyl)-D-prolinamide chemical structure

1-(Chloroacetyl)-D-prolinamide

CAS: 1211679-98-9
Formula: C₇H₁₁ClN₂O₂
MW: 190.63 g/mol

VQ-034623

Reference Standard

1-(Chloroacetyl)piperidine-4-carboxamide chemical structure

1-(Chloroacetyl)piperidine-4-carboxamide

CAS: 375359-83-4
Formula: C₈H₁₃ClN₂O₂
MW: 204.65 g/mol

VQ-041889

Reference Standard

1-(Chloroacetylamino) Adamantane chemical structure

1-(Chloroacetylamino) Adamantane

CAS: 5689-59-8
Formula: C₁₂H₁₈ClNO
MW: 227.73 g/mol

VQ-035064

Reference Standard

1-(Chloromethyl)-4-methylnaphthalene chemical structure

1-(Chloromethyl)-4-methylnaphthalene

CAS: 5261-50-7
Formula: C₁₂H₁₁Cl
MW: 190.67 g/mol

VQ-042441

Reference Standard

1-(Cyanomethyl)cyclohexane-1-carboxylic acid chemical structure

1-(Cyanomethyl)cyclohexane-1-carboxylic acid

CAS: 1936090-03-7
Formula: C₉H₁₃NO₂
MW: 167.2 g/mol

VQ-048492

Reference Standard

1-(Cyclopent-1-en-1-yl)pyrrolidine chemical structure

1-(Cyclopent-1-en-1-yl)pyrrolidine

CAS: 7148-07-4
Formula: C₉H₁₅N
MW: 137.22 g/mol

VQ-041831

Reference Standard

1-(Ethoxycarbonyl)piperidine-4-carboxylic acid chemical structure

1-(Ethoxycarbonyl)piperidine-4-carboxylic acid

CAS: 118133-15-6
Formula: C₉H₁₅NO₄
MW: 201.22 g/mol

VQ-041937

Reference Standard

1-(Hydroxyacetylamino) Adamantane

1-(Hydroxyacetylamino) Adamantane

CAS: 98969-47-2
Formula: C₁₂H₁₉NO₂
MW: 209.2 g/mol

VQ-035065

Reference Standard

1-(Isopropylamino)-3-(naphthalen-2-yloxy)propan-2-ol chemical structure

1-(Isopropylamino)-3-(naphthalen-2-yloxy)propan-2-ol

CAS: 2007-72-9
Formula: C₁₆H₂₁NO₂
MW: 259.34 g/mol

VQ-032576

Reference Standard

1-(L-Phenylalanyl-L-phenylalanyl-L-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic Acid chemical structure

1-(L-Phenylalanyl-L-phenylalanyl-L-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic Acid

CAS: 2742623-84-1
Formula: C₃₆H₅₃N₇O₆
MW: 679.8 g/mol

VQ-036696

Reference Standard

1-(Mercaptomethyl)cyclopropaneacetic Acid chemical structure

1-(Mercaptomethyl)cyclopropaneacetic Acid

CAS: 162515-68-6
Formula: C₆H₁₀O₂S
MW: 146.21 g/mol

VQ-031986

Reference Standard

1-(Methoxyacetylamino) Adamantane

1-(Methoxyacetylamino) Adamantane

CAS: 42536-56-1
Formula: C₁₃H₂₁NO₂
MW: 223.32 g/mol

VQ-035054

Reference Standard

1-(Methoxymethyl)-1H-imidazole chemical structure

1-(Methoxymethyl)-1H-imidazole

CAS: 20075-26-7
Formula: C₅H₈N₂O
MW: 112.13 g/mol

VQ-039179

Reference Standard

1-(Methyl-d3)piperazine Dihydrochloride chemical structure

1-(Methyl-d3)piperazine Dihydrochloride

CAS: 2043778-87-4
Formula: C₅H₁₄Cl₂N₂
MW: 176.1 g/mol

VQ-041224

Reference Standard

1-(Naphthalen-6-yl)ethanamine chemical structure

1-(Naphthalen-6-yl)ethanamine

CAS: 1201-74-7
Formula: C₁₂H₁₃N
MW: 171.24 g/mol

VQ-036321

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.

Request a quote Contact sales