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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

Piperazine N, N-Desethyl Sildenafil chemical structure

Piperazine N, N-Desethyl Sildenafil

CAS: 466684-88-8
Formula: C₂₀H₂₈N₆O₄S
MW: 448.5 g/mol

VQ-042165

Reference Standard

Piperazine-1-carbonyl chloride chemical structure

Piperazine-1-carbonyl chloride

CAS: 69433-07-4
Formula: C₅H₉ClN₂O
MW: 148.59 g/mol

VQ-032937

Reference Standard

Piperazine-d8 chemical structure

CAS: 134628-42-5
Formula: C₄H₁₀N₂
MW: 94.18 g/mol

VQ-041516

Reference Standard

Piperazine-d8 Dihydrochloride chemical structure

Piperazine-d8 Dihydrochloride

CAS: 849482-21-9
Formula: C₄H₁₂Cl₂N₂
MW: 167.1 g/mol

VQ-041201

Reference Standard

Piperitone chemical structure

CAS: 89-81-6
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-027120

Reference Standard

Piperonyl Acetate chemical structure

Piperonyl Acetate

CAS: 326-61-4
Formula: C₁₀H₁₀O₄
MW: 194.18 g/mol

VQ-032330

Reference Standard

Piperonyl Alcohol chemical structure

Piperonyl Alcohol

CAS: 495-76-1
Formula: C₈H₈O₃
MW: 152.15 g/mol

VQ-032329

Reference Standard

Piperonyl chloride chemical structure

Piperonyl chloride

CAS: 20850-43-5
Formula: C₈H₇ClO₂
MW: 170.59 g/mol

VQ-032327

Reference Standard

Piperonylic Acid chemical structure

Piperonylic Acid

CAS: 94-53-1
Formula: C₈H₆O₄
MW: 166.13 g/mol

VQ-042275

Reference Standard

Piperyline chemical structure

CAS: 25924-78-1
Formula: C₁₆H₁₇NO₃
MW: 271.31 g/mol

VQ-040168

Reference Standard

Pipotiazine Palmitate chemical structure

Pipotiazine Palmitate

CAS: 37517-26-3
Formula: C₄₀H₆₃N₃O₄S₂
MW: 714.1 g/mol

VQ-043542

Reference Standard

Piracetam EP Impurity B chemical structure

Piracetam EP Impurity B

CAS: 59776-88-4
Formula: C₇H₁₁NO₃
MW: 157.17 g/mol

VQ-023503

Reference Standard

Piracetam EP Impurity C chemical structure

Piracetam EP Impurity C

CAS: 61516-73-2
Formula: C₈H₁₃NO₃
MW: 171.19 g/mol

VQ-023504

Reference Standard

Piracetam EP Impurity D chemical structure

Piracetam EP Impurity D

CAS: 53934-76-2
Formula: C₆H₉NO₃
MW: 143.14 g/mol

VQ-023502

Reference Standard

Piracetam-d8 chemical structure

CAS: 1329799-64-5
Formula: C₆H₁₀N₂O₂
MW: 150.2 g/mol

VQ-041517

Reference Standard

Pirarubicin chemical structure

CAS: 72496-41-4
Formula: C₃₂H₃₇NO₁₂
MW: 627.6 g/mol

VQ-043623

Reference Standard

Pirbuterol chemical structure

CAS: 38677-81-5
Formula: C₁₂H₂₀N₂O₃
MW: 240.3 g/mol

VQ-041518

Reference Standard

Pirenzepine DiHydrochloride Monohydrate chemical structure

Pirenzepine DiHydrochloride Monohydrate

CAS: 2242504-48-7
Formula: C₁₉H₂₅Cl₂N₅O₃
MW: 442.3 g/mol

VQ-044755

Reference Standard

Pirenzepine EP Impurity A chemical structure

Pirenzepine EP Impurity A

CAS: 28797-48-0
Formula: C₁₄H₁₀ClN₃O₂
MW: 287.7 g/mol

VQ-035007

Reference Standard

Pirenzepine EP Impurity B chemical structure

Pirenzepine EP Impurity B

CAS: 885-70-1
Formula: C₁₂H₉N₃O
MW: 211.22 g/mol

VQ-035008

Reference Standard

Pirenzepine EP Impurity C

Pirenzepine EP Impurity C

CAS: 126856-99-3
Formula: C₁₉H₂₁N₅O₂
MW: 351.41 g/mol

VQ-044761

Reference Standard

Piretanide chemical structure

CAS: 55837-27-9
Formula: C₁₇H₁₈N₂O₅S
MW: 362.4 g/mol

VQ-034885

Reference Standard

Piretanide EP Impurity A chemical structure

Piretanide EP Impurity A

CAS: 67641-46-7
Formula: C₁₇H₁₄N₂O₅S
MW: 358.4 g/mol

VQ-044762

Reference Standard

Piretanide EP Impurity B chemical structure

Piretanide EP Impurity B

CAS: 60376-76-3
Formula: C₂₁H₂₅N₃O₅S
MW: 431.5 g/mol

VQ-044763

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