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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

Pirfenidone chemical structure

CAS: 53179-13-8
Formula: C₁₂H₁₁NO
MW: 185.22 g/mol

VQ-027445

Reference Standard

Pirfenidone EP Impurity B chemical structure

Pirfenidone EP Impurity B

CAS: 1003-68-5
Formula: C₆H₇NO
MW: 109.13 g/mol

VQ-023478

Reference Standard

Pirfenidone-d3 chemical structure

CAS: 1093951-85-9
Formula: C₁₂H₁₁NO
MW: 188.24 g/mol

VQ-033128

Reference Standard

Pirfenidone-d5 chemical structure

CAS: 1020719-62-3
Formula: C₁₂H₁₁NO
MW: 190.25 g/mol

VQ-041412

Reference Standard

Piribedil chemical structure

CAS: 3605-01-4
Formula: C₁₆H₁₈N₄O₂
MW: 298.34 g/mol

VQ-033212

Reference Standard

Piribedil N-Oxide chemical structure

Piribedil N-Oxide

CAS: 53954-71-5
Formula: C₁₆H₁₈N₄O₃
MW: 314.34 g/mol

VQ-033213

Reference Standard

Piribedil-d8 chemical structure

CAS: 1398044-45-5
Formula: C₁₆H₁₈N₄O₂
MW: 306.39 g/mol

VQ-041521

Reference Standard

Pirlimycin chemical structure

CAS: 79548-73-5
Formula: C₁₇H₃₁ClN₂O₅S
MW: 411 g/mol

VQ-033218

Reference Standard

Pirlimycin Hydrochloride chemical structure

Pirlimycin Hydrochloride

CAS: 78822-40-9
Formula: C₁₇H₃₂Cl₂N₂O₅S
MW: 447.4 g/mol

VQ-041522

Reference Standard

Piroctone Olamine chemical structure

Piroctone Olamine

CAS: 68890-66-4
Formula: C₁₆H₃₀N₂O₃
MW: 298.42 g/mol

VQ-033219

Reference Standard

Piroxicam EP Impurity B chemical structure

Piroxicam EP Impurity B

CAS: 65897-46-3
Formula: C₁₄H₁₁N₃O₄S
MW: 317.32 g/mol

VQ-023506

Reference Standard

Piroxicam EP Impurity C chemical structure

Piroxicam EP Impurity C

CAS: 24683-25-8
Formula: C₁₀H₁₀N₂O₄S
MW: 254.26 g/mol

VQ-027524

Reference Standard

Piroxicam EP Impurity D chemical structure

Piroxicam EP Impurity D

CAS: 6639-62-9
Formula: C₁₀H₉NO₅S
MW: 255.25 g/mol

VQ-023507

Reference Standard

Piroxicam EP Impurity E chemical structure

Piroxicam EP Impurity E

CAS: 24683-20-3
Formula: C₁₁H₁₁NO₅S
MW: 269.28 g/mol

VQ-023509

Reference Standard

Piroxicam EP Impurity F chemical structure

Piroxicam EP Impurity F

CAS: 76508-37-7
Formula: C₁₂H₁₃NO₅S
MW: 283.3 g/mol

VQ-023505

Reference Standard

Piroxicam EP Impurity G chemical structure

Piroxicam EP Impurity G

CAS: 35511-14-9
Formula: C₁₀H₉NO₅S
MW: 255.25 g/mol

VQ-023508

Reference Standard

Piroxicam EP Impurity H chemical structure

Piroxicam EP Impurity H

CAS: 24683-21-4
Formula: C₁₁H₁₁NO₅S
MW: 269.28 g/mol

VQ-023510

Reference Standard

Piroxicam EP Impurity I chemical structure

Piroxicam EP Impurity I

CAS: 76508-35-5
Formula: C₁₂H₁₃NO₅S
MW: 283.3 g/mol

VQ-023511

Reference Standard

Piroxicam EP Impurity J chemical structure

Piroxicam EP Impurity J

CAS: 35511-15-0
Formula: C₁₁H₁₁NO₅S
MW: 269.28 g/mol

VQ-023056

Reference Standard

Piroxicam O-Isopropyl Impurity chemical structure

Piroxicam O-Isopropyl Impurity

CAS: 118854-49-2
Formula: C₁₈H₁₉N₃O₄S
MW: 373.4 g/mol

In stock

Reference Standard

Piroxicam-d3 chemical structure

CAS: 942047-64-5
Formula: C₁₅H₁₃N₃O₄S
MW: 334.4 g/mol

VQ-041524

Reference Standard

Pirtobrutinib chemical structure

CAS: 2101700-15-4
Formula: C₂₂H₂₁F₄N₅O₃
MW: 479.4 g/mol

VQ-033221

Reference Standard

Pirtobrutinib Impurity 3 chemical structure

Pirtobrutinib Impurity 3

CAS: 1453473-00-1
Formula: C₁₀H₁₁F₃N₂O
MW: 232.2 g/mol

VQ-041526

Reference Standard

Pirtobrutinib Impurity 8 Hydrochloride chemical structure

Pirtobrutinib Impurity 8 Hydrochloride

CAS: 2940876-23-1
Formula: C₃H₈ClF₃N₂
MW: 164.56 g/mol

VQ-041525

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