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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.

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

Pyridoxine Dimer Impurity (N-4 Stage) chemical structure

Pyridoxine Dimer Impurity (N-4 Stage)

CAS: 25183-10-2
Formula: C₂₂H₂₃NO₃
MW: 349.4 g/mol

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Reference Standard

Pyridoxine EP Impurity A chemical structure

Pyridoxine EP Impurity A

CAS: 1006-21-9
Formula: C₈H₁₀ClNO₂
MW: 187.62 g/mol

VQ-023586

Reference Standard

Pyridoxine EP Impurity B chemical structure

Pyridoxine EP Impurity B

CAS: 148-51-6
Formula: C₈H₁₂ClNO₂
MW: 189.64 g/mol

VQ-027685

Reference Standard

Pyridoxine EP Impurity B (Free Base) chemical structure

Pyridoxine EP Impurity B (Free Base)

CAS: 61-67-6
Formula: C₈H₁₁NO₂
MW: 153.18 g/mol

VQ-044296

Reference Standard

Pyridoxine Hydrochloride chemical structure

Pyridoxine Hydrochloride

CAS: 58-56-0
Formula: C₈H₁₂ClNO₃
MW: 205.64 g/mol

VQ-007685

Reference Standard

Pyridoxine Impurity A chemical structure

Pyridoxine Impurity A

CAS: 5196-20-3
Formula: C₈H₉NO₂
MW: 151.16 g/mol

VQ-027686

Reference Standard

Pyridoxine Impurity-32 chemical structure

Pyridoxine Impurity-32

CAS: 19203-53-3
Formula: C₁₆H₂₀N₂O₅
MW: 320.34 g/mol

VQ-005670

Reference Standard

Pyridoxine N- Oxide chemical structure

Pyridoxine N- Oxide

CAS: 16567-04-7
Formula: C₈H₁₁NO₄
MW: 185.18 g/mol

VQ-041768

Reference Standard

Pyridoxine-d2 HCl chemical structure

Pyridoxine-d2 HCl

CAS: 5027-82-7
Formula: C₈H₁₂ClNO₃
MW: 207.65 g/mol

VQ-041771

Reference Standard

Pyridoxine-d3 Hydrochloride chemical structure

Pyridoxine-d3 Hydrochloride

CAS: 1189921-12-7
Formula: C₈H₁₂ClNO₃
MW: 208.66 g/mol

VQ-041770

Reference Standard

Pyridoxine-d5 chemical structure

CAS: 688302-31-0
Formula: C₈H₁₁NO₃
MW: 174.21 g/mol

VQ-041772

Reference Standard

Pyridoxol 5-Phosphate chemical structure

Pyridoxol 5-Phosphate

CAS: 447-05-2
Formula: C₈H₁₂NO₆P
MW: 249.16 g/mol

VQ-041769

Reference Standard

Pyrimethamine EP Impurity 3 chemical structure

Pyrimethamine EP Impurity 3

CAS: 93456-61-2
Formula: C₁₂H₁₂ClN₃O
MW: 249.69 g/mol

VQ-041773

Reference Standard

Pyrimethamine EP Impurity A chemical structure

Pyrimethamine EP Impurity A

CAS: 55474-40-3
Formula: C₁₁H₁₀ClNO
MW: 207.65 g/mol

VQ-027114

Reference Standard

Pyrimethamine EP Impurity B chemical structure

Pyrimethamine EP Impurity B

CAS: 3275-44-3
Formula: C₁₁H₁₁ClN₄
MW: 234.68 g/mol

VQ-032408

Reference Standard

Pyrimethamine EP Impurity D chemical structure

Pyrimethamine EP Impurity D

CAS: 55474-41-4
Formula: C₁₃H₁₄ClNO₂
MW: 251.71 g/mol

VQ-032407

Reference Standard

Pyrimethamine-d3 chemical structure

Pyrimethamine-d3

CAS: 1189936-99-9
Formula: C₁₂H₁₃ClN₄
MW: 251.73 g/mol

VQ-041143

Reference Standard

Pyrimitate chemical structure

CAS: 5221-49-8
Formula: C₁₁H₂₀N₃O₃PS
MW: 305.34 g/mol

VQ-039925

Reference Standard

Pyrindan chemical structure

CAS: 533-37-9
Formula: C₈H₉N
MW: 119.16 g/mol

VQ-044215

Reference Standard

Pyriproxyfen chemical structure

CAS: 95737-68-1
Formula: C₂₀H₁₉NO₃
MW: 321.4 g/mol

VQ-038924

Reference Standard

Pyronaridine 2-Chloro Impurity chemical structure

Pyronaridine 2-Chloro Impurity

CAS: 1596337-68-6
Formula: C₂₈H₂₉Cl₂N₅O
MW: 522.5 g/mol

VQ-045082

Reference Standard

Pyronaridine Bis-2-Pyrrolidone

Pyronaridine Bis-2-Pyrrolidone

CAS: 808135-29-7
Formula: C₂₉H₂₈ClN₅O₃
MW: 530.02 g/mol

VQ-045387

Reference Standard

Pyronaridine Tetraphosphate chemical structure

Pyronaridine Tetraphosphate

CAS: 76748-86-2
Formula: C₂₉H₄₄ClN₅O₁₈P₄
MW: 910 g/mol

VQ-033394

Reference Standard

Pyronaridine-13C2,D4

Pyronaridine-13C2,D4

CAS: 1261393-31-0
Formula: C₂₇₁₃C₂H₂₈D₄ClN₅O₂
MW: 524.06 g/mol

VQ-035411

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