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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

Sulfasalazine EP Impurity I chemical structure

Sulfasalazine EP Impurity I

CAS: 21542-82-5
Formula: C₁₃H₁₀N₂O₆S
MW: 322.3 g/mol

VQ-043308

Reference Standard

Sulfasalazine EP Impurity I chemical structure

Sulfasalazine EP Impurity I

CAS: 1310803-27-0
Formula: C₁₃H₁₀N₂O₆S
MW: 322.3 g/mol

VQ-049050

Reference Standard

Sulfasalazine EP Impurity I disodium chemical structure

Sulfasalazine EP Impurity I disodium

CAS: 6054-99-5
Formula: C₁₃H₈N₂Na₂O₆S
MW: 366.26 g/mol

VQ-033983

Reference Standard

Sulfasalazine-d4 chemical structure

Sulfasalazine-d4

CAS: 1346606-50-5
Formula: C₁₈H₁₄N₄O₅S
MW: 402.4 g/mol

VQ-042310

Reference Standard

Sulfathiazole chemical structure

CAS: 72-14-0
Formula: C₉H₉N₃O₂S₂
MW: 255.3 g/mol

VQ-033984

Reference Standard

Sulfathiazole-d4 chemical structure

Sulfathiazole-d4

CAS: 1020719-89-4
Formula: C₉H₉N₃O₂S₂
MW: 259.3 g/mol

VQ-042311

Reference Standard

Sulfatroxazole chemical structure

CAS: 23256-23-7
Formula: C₁₁H₁₃N₃O₃S
MW: 267.31 g/mol

VQ-042312

Reference Standard

Sulfentrazone chemical structure

CAS: 122836-35-5
Formula: C₁₁H₁₀Cl₂F₂N₄O₃S
MW: 387.2 g/mol

VQ-007767

Reference Standard

Sulfinpyrazone chemical structure

CAS: 57-96-5
Formula: C₂₃H₂₀N₂O₃S
MW: 404.5 g/mol

VQ-042313

Reference Standard

Sulfisoxazole chemical structure

CAS: 127-69-5
Formula: C₁₁H₁₃N₃O₃S
MW: 267.31 g/mol

VQ-043309

Reference Standard

Sulfoaildenafil chemical structure

Sulfoaildenafil

CAS: 856190-47-1
Formula: C₂₃H₃₂N₆O₃S₂
MW: 504.7 g/mol

VQ-042314

Reference Standard

Sulfociprofloxacin chemical structure

Sulfociprofloxacin

CAS: 105093-21-8
Formula: C₁₇H₁₈FN₃O₆S
MW: 411.4 g/mol

VQ-036341

Reference Standard

Sulindac EP Impurity A chemical structure

Sulindac EP Impurity A

CAS: 53933-60-1
Formula: C₂₀H₁₇FO₃S
MW: 356.4 g/mol

VQ-006697

Reference Standard

Sulindac EP Impurity B chemical structure

Sulindac EP Impurity B

CAS: 59973-80-7
Formula: C₂₀H₁₇FO₄S
MW: 372.4 g/mol

VQ-028149

Reference Standard

Sulindac EP Impurity C chemical structure

Sulindac EP Impurity C

CAS: 49627-27-2
Formula: C₂₀H₁₇FO₂S
MW: 340.4 g/mol

In stock

Reference Standard

Sulindac EP Impurity D chemical structure

Sulindac EP Impurity D

CAS: 134439-52-4
Formula: C₂₁H₁₉FO₃S
MW: 370.4 g/mol

VQ-042315

Reference Standard

Sulpiride chemical structure

CAS: 15676-16-1
Formula: C₁₅H₂₃N₃O₄S
MW: 341.4 g/mol

VQ-023816

Reference Standard

Sulpiride EP Impurity C chemical structure

Sulpiride EP Impurity C

CAS: 33045-53-3
Formula: C₁₀H₁₃NO₅S
MW: 259.28 g/mol

VQ-022988

Reference Standard

Sulpiride EP Impurity D chemical structure

Sulpiride EP Impurity D

CAS: 22117-85-7
Formula: C₈H₉NO₅S
MW: 231.23 g/mol

VQ-028150

Reference Standard

Sulpiride EP Impurity E chemical structure

Sulpiride EP Impurity E

CAS: 52395-25-2
Formula: C₈H₁₀N₂O₄S
MW: 230.24 g/mol

VQ-026457

Reference Standard

Sulpiride EP Impurity F chemical structure

Sulpiride EP Impurity F

CAS: 2214214-03-4
Formula: C₁₅H₂₃N₃O₅S
MW: 357.4 g/mol

VQ-023817

Reference Standard

Sulpiride EP impurity G chemical structure

Sulpiride EP impurity G

CAS: 67381-52-6
Formula: C₁₄H₂₁N₃O₄S
MW: 327.4 g/mol

VQ-023818

Reference Standard

Sulpiride impurity 3 chemical structure

Sulpiride impurity 3

CAS: 93414-62-1
Formula: C₁₅H₂₃N₃O₄S
MW: 341.4 g/mol

VQ-033985

Reference Standard

Sulpiride N-(1-ethyl-3-piperidinyl) impurity

Sulpiride N-(1-ethyl-3-piperidinyl) impurity

CAS: 51218-14-5
Formula: C₁₅H₂₃N₃O₄S
MW: 341.4 g/mol

VQ-028151

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