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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

DL-3-Phenyllactic acid chemical structure

DL-3-Phenyllactic acid

CAS: 828-01-3
Formula: C₉H₁₀O₃
MW: 166.17 g/mol

VQ-039818

Reference Standard

DL-5-Hydroxy-DL-lysine Hydrochloride chemical structure

DL-5-Hydroxy-DL-lysine Hydrochloride

CAS: 13204-98-3
Formula: C₆H₁₅ClN₂O₃
MW: 198.65 g/mol

VQ-032672

Reference Standard

DL-Alanine-d3 chemical structure

CAS: 53795-94-1
Formula: C₃H₇NO₂
MW: 92.11 g/mol

VQ-036752

Reference Standard

Dl-Alpha-Tocopherol Acetate chemical structure

Dl-Alpha-Tocopherol Acetate

CAS: 52225-20-4
Formula: C₃₁H₅₂O₃
MW: 472.7 g/mol

VQ-034665

Reference Standard

DL-Arabinose chemical structure

CAS: 147-81-9
Formula: C₅H₁₀O₅
MW: 150.13 g/mol

VQ-038992

Reference Standard

DL-Arginine chemical structure

CAS: 7200-25-1
Formula: C₆H₁₄N₄O₂
MW: 174.2 g/mol

VQ-022930

Reference Standard

DL-Carbidopa chemical structure

CAS: 302-53-4
Formula: C₁₀H₁₄N₂O₄
MW: 226.23 g/mol

VQ-029634

Reference Standard

DL-Carnitine chemical structure

CAS: 406-76-8
Formula: C₇H₁₅NO₃
MW: 161.2 g/mol

VQ-032343

Reference Standard

DL-Cycloserine chemical structure

CAS: 68-39-3
Formula: C₃H₆N₂O₂
MW: 102.09 g/mol

VQ-047894

Reference Standard

DL-Cystine-D4 chemical structure

CAS: 108641-83-4
Formula: C₆H₁₂N₂O₄S₂
MW: 244.3 g/mol

VQ-047318

Reference Standard

DL-Cystine-D6 chemical structure

CAS: 352431-53-9
Formula: C₆H₁₂N₂O₄S₂
MW: 246.3 g/mol

VQ-047902

Reference Standard

DL-Dopaquinone chemical structure

CAS: 4430-97-1
Formula: C₉H₉NO₄
MW: 195.17 g/mol

VQ-032764

Reference Standard

DL-Dropropizine N,N-Dioxide chemical structure

DL-Dropropizine N,N-Dioxide

CAS: 152237-41-7
Formula: C₁₃H₂₀N₂O₄
MW: 268.31 g/mol

VQ-026439

Reference Standard

DL-Glyceraldehyde chemical structure

DL-Glyceraldehyde

CAS: 56-82-6
Formula: C₃H₆O₃
MW: 90.08 g/mol

VQ-040351

Reference Standard

DL-Glyceric acid chemical structure

DL-Glyceric acid

CAS: 473-81-4
Formula: C₃H₆O₄
MW: 106.08 g/mol

VQ-040649

Reference Standard

DL-Histidine-a,b,b-D3 chemical structure

DL-Histidine-a,b,b-D3

CAS: 344299-50-9
Formula: C₆H₉N₃O₂
MW: 158.17 g/mol

VQ-048883

Reference Standard

DL-Homocysteine chemical structure

DL-Homocysteine

CAS: 454-29-5
Formula: C₄H₉NO₂S
MW: 135.19 g/mol

VQ-031398

Reference Standard

DL-Homocysteine Thiolactone HCL chemical structure

DL-Homocysteine Thiolactone HCL

CAS: 6038-19-3
Formula: C₄H₈ClNOS
MW: 153.63 g/mol

VQ-032933

Reference Standard

DL-Homocysteine-d4 chemical structure

DL-Homocysteine-d4

CAS: 416845-90-4
Formula: C₄H₉NO₂S
MW: 139.21 g/mol

VQ-041247

Reference Standard

DL-Homocystine-3,3,3`,3`,4,4,4`,4`-D8 chemical structure

DL-Homocystine-3,3,3`,3`,4,4,4`,4`-D8

CAS: 108641-82-3
Formula: C₈H₁₆N₂O₄S₂
MW: 276.4 g/mol

VQ-052430

Reference Standard

DL-Lactonitrile chemical structure

DL-Lactonitrile

CAS: 78-97-7
Formula: C₃H₅NO
MW: 71.08 g/mol

VQ-050436

Reference Standard

DL-Leucine-d7 (iso-propyl-d7) chemical structure

DL-Leucine-d7 (iso-propyl-d7)

CAS: 259225-40-6
Formula: C₆H₁₃NO₂
MW: 138.22 g/mol

VQ-041173

Reference Standard

DL-Lysine chemical structure

CAS: 70-54-2
Formula: C₆H₁₄N₂O₂
MW: 146.19 g/mol

VQ-038229

Reference Standard

DL-Lysine Acetylsalicylate chemical structure

DL-Lysine Acetylsalicylate

CAS: 62952-06-1
Formula: C₁₅H₂₂N₂O₆
MW: 326.34 g/mol

VQ-048042

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