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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 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

Grazoprevir chemical structure

CAS: 1350514-68-9
Formula: C₃₈H₅₀N₆O₉S
MW: 766.9 g/mol

VQ-031035

Reference Standard

Griseofulvic Acid chemical structure

Griseofulvic Acid

CAS: 469-54-5
Formula: C₁₆H₁₅ClO₆
MW: 338.74 g/mol

VQ-026030

Reference Standard

Griseofulvin EP Impurity C chemical structure

Griseofulvin EP Impurity C

CAS: 3573-90-8
Formula: C₁₇H₁₅ClO₆
MW: 350.7 g/mol

VQ-026029

Reference Standard

Griseofulvin-13C,d3 chemical structure

Griseofulvin-13C,d3

CAS: 1329612-29-4
Formula: C₁₇H₁₇ClO₆
MW: 356.77 g/mol

VQ-037562

Reference Standard

Guaiacol acetate chemical structure

Guaiacol acetate

CAS: 613-70-7
Formula: C₉H₁₀O₃
MW: 166.17 g/mol

VQ-048563

Reference Standard

Guaiacol allyl ether chemical structure

Guaiacol allyl ether

CAS: 4125-43-3
Formula: C₁₀H₁₂O₂
MW: 164.2 g/mol

VQ-039752

Reference Standard

Guaifenasin Impurity C chemical structure

Guaifenasin Impurity C

CAS: 1797132-23-0
Formula: C₂₀H₂₆O₇
MW: 378.4 g/mol

In stock

Reference Standard

Guaifenesin EP Impurity B chemical structure

Guaifenesin EP Impurity B

CAS: 14007-09-1
Formula: C₁₀H₁₄O₄
MW: 198.22 g/mol

In stock

Reference Standard

Guaifenesin EP Impurity D chemical structure

Guaifenesin EP Impurity D

CAS: 16929-60-5
Formula: C₁₇H₂₀O₅
MW: 304.34 g/mol

In stock

Reference Standard

Guaifenesin-d3 chemical structure

CAS: 1189924-85-3
Formula: C₁₀H₁₄O₄
MW: 201.23 g/mol

VQ-031043

Reference Standard

Guanabenz Acetate chemical structure

Guanabenz Acetate

CAS: 23256-50-0
Formula: C₁₀H₁₂Cl₂N₄O₂
MW: 291.13 g/mol

VQ-048565

Reference Standard

Guanfacine chemical structure

CAS: 29110-47-2
Formula: C₉H₉Cl₂N₃O
MW: 246.09 g/mol

VQ-043188

Reference Standard

Guanfacine Hydrochloride chemical structure

Guanfacine Hydrochloride

CAS: 29110-48-3
Formula: C₉H₁₀Cl₃N₃O
MW: 282.5 g/mol

VQ-026031

Reference Standard

Guanfacine Methyl Ester Impurity chemical structure

Guanfacine Methyl Ester Impurity

CAS: 54551-83-6
Formula: C₉H₈Cl₂O₂
MW: 219.06 g/mol

VQ-026032

Reference Standard

Guanfacine-13C,15N3 chemical structure

Guanfacine-13C,15N3

CAS: 1189924-28-4
Formula: C₉H₉Cl₂N₃O
MW: 250.06 g/mol

VQ-031041

Reference Standard

Guanfacine-13C,15N3 Hydrochloride chemical structure

Guanfacine-13C,15N3 Hydrochloride

CAS: 1261393-21-8
Formula: C₉H₁₀Cl₃N₃O
MW: 286.5 g/mol

VQ-048566

Reference Standard

Guanidine-d5 Hydrochloride-d chemical structure

Guanidine-d5 Hydrochloride-d

CAS: 108694-93-5
Formula: CH₆ClN₃
MW: 101.57 g/mol

VQ-041193

Reference Standard

Guanidine, N,N'''-(6-amino-1,3,5-triazine-2,4-diyl)bis chemical structure

Guanidine, N,N'''-(6-amino-1,3,5-triazine-2,4-diyl)bis

CAS: 26690-75-5
Formula: C₅H₁₀N₁₀
MW: 210.2 g/mol

VQ-049061

Reference Standard

Guanine 9-beta-D-Arabinofuranoside chemical structure

Guanine 9-beta-D-Arabinofuranoside

CAS: 38819-10-2
Formula: C₁₀H₁₃N₅O₅
MW: 283.24 g/mol

VQ-024144

Reference Standard

Gymnemagenin chemical structure

CAS: 22467-07-8
Formula: C₃₀H₅₀O₆
MW: 506.7 g/mol

VQ-031044

Reference Standard

H-Ala-Ala-Gln-OH chemical structure

H-Ala-Ala-Gln-OH

CAS: 290312-62-8
Formula: C₁₁H₂₀N₄O₅
MW: 288.3 g/mol

VQ-027204

Reference Standard

H-Ala-Glu-OH chemical structure

CAS: 13187-90-1
Formula: C₈H₁₄N₂O₅
MW: 218.21 g/mol

VQ-027181

Reference Standard

H-DL-delta-Hydroxy-DL-Lys(Boc)-OH chemical structure

H-DL-delta-Hydroxy-DL-Lys(Boc)-OH

CAS: 305820-28-4
Formula: C₁₁H₂₂N₂O₅
MW: 262.3 g/mol

VQ-050688

Reference Standard

H-L-His(2-Oxo)-OH.HCL chemical structure

H-L-His(2-Oxo)-OH.HCL

CAS: 2580100-34-9
Formula: C₆H₁₀ClN₃O₃
MW: 207.61 g/mol

VQ-035298

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