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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

Prucalopride Impurity 42 chemical structure

Prucalopride Impurity 42

CAS: 143878-25-5
Formula: C₁₂H₁₀ClNO₄
MW: 267.66 g/mol

VQ-005663

Reference Standard

Prucalopride Impurity D chemical structure

Prucalopride Impurity D

CAS: 182808-04-4
Formula: C₁₀H₁₀ClNO₃
MW: 227.64 g/mol

In stock

Reference Standard

Prucalopride N-Formyl Impurity

Prucalopride N-Formyl Impurity

Formula: C₁₉H₂₆ClN₃O₄
MW: 395.88 g/mol

In stock

Reference Standard

Prucalopride N-Oxide chemical structure

Prucalopride N-Oxide

CAS: 1900715-98-1
Formula: C₁₈H₂₆ClN₃O₄
MW: 383.9 g/mol

In stock

Reference Standard

Prucalopride open ring impurity chemical structure

Prucalopride open ring impurity

CAS: 1900715-94-7
Formula: C₁₈H₂₄ClN₃O₅
MW: 397.9 g/mol

VQ-041750

Reference Standard

Prucalopride Succinate chemical structure

Prucalopride Succinate

CAS: 179474-85-2
Formula: C₂₂H₃₂ClN₃O₇
MW: 486 g/mol

In stock

Reference Standard

Prulifloxacin chemical structure

CAS: 123447-62-1
Formula: C₂₁H₂₀FN₃O₆S
MW: 461.5 g/mol

VQ-033386

Reference Standard

Pseudo Vardenafil chemical structure

Pseudo Vardenafil

CAS: 224788-34-5
Formula: C₂₂H₂₉N₅O₄S
MW: 459.6 g/mol

VQ-028911

Reference Standard

Pseudobenztropine chemical structure

Pseudobenztropine

CAS: 802597-90-6
Formula: C₂₁H₂₅NO
MW: 307.4 g/mol

VQ-024067

Reference Standard

Pseudoerythromycin A Hemiketal chemical structure

Pseudoerythromycin A Hemiketal

CAS: 105900-46-7
Formula: C₃₇H₆₇NO₁₃
MW: 733.9 g/mol

VQ-025600

Reference Standard

Pseudogamythromycin chemical structure

Pseudogamythromycin

CAS: 92594-48-4
Formula: C₄₀H₇₆N₂O₁₂
MW: 777 g/mol

VQ-030939

Reference Standard

Pseudohypericin chemical structure

Pseudohypericin

CAS: 55954-61-5
Formula: C₃₀H₁₆O₉
MW: 520.4 g/mol

VQ-040699

Reference Standard

Pseudomonic acid E chemical structure

Pseudomonic acid E

CAS: 167842-57-1
Formula: C₂₈H₄₈O₉
MW: 528.7 g/mol

VQ-032025

Reference Standard

Pseudoprotodioscin chemical structure

Pseudoprotodioscin

CAS: 102115-79-7
Formula: C₅₁H₈₂O₂₁
MW: 1031.2 g/mol

VQ-040518

Reference Standard

Psi-Tropine chemical structure

CAS: 135-97-7
Formula: C₈H₁₅NO
MW: 141.21 g/mol

VQ-032570

Reference Standard

Psoralen chemical structure

CAS: 66-97-7
Formula: C₁₁H₆O₃
MW: 186.16 g/mol

VQ-041756

Reference Standard

PTH-I Butyl Impurity

PTH-I Butyl Impurity

CAS: 875229-73-5
Formula: C₁₂H₂₅NO
MW: 199.33 g/mol

In stock

Reference Standard

Punicalagin chemical structure

CAS: 65995-63-3
Formula: C₄₈H₂₈O₃₀
MW: 1084.7 g/mol

VQ-039809

Reference Standard

Pymetrozine chemical structure

CAS: 123312-89-0
Formula: C₁₀H₁₁N₅O
MW: 217.23 g/mol

VQ-041757

Reference Standard

Pyr-His-Trp-Ser-Tyr-OH chemical structure

Pyr-His-Trp-Ser-Tyr-OH

CAS: 52434-75-0
Formula: C₃₄H₃₈N₈O₉
MW: 702.7 g/mol

VQ-037971

Reference Standard

Pyraclostrobin chemical structure

CAS: 175013-18-0
Formula: C₁₉H₁₈ClN₃O₄
MW: 387.8 g/mol

VQ-032724

Reference Standard

Pyranocoumarin chemical structure

CAS: 518-20-7
Formula: C₂₀H₁₈O₄
MW: 322.4 g/mol

VQ-039858

Reference Standard

Pyrantel chemical structure

CAS: 15686-83-6
Formula: C₁₁H₁₄N₂S
MW: 206.31 g/mol

VQ-044444

Reference Standard

Pyrantel EP Impurity A chemical structure

Pyrantel EP Impurity A

CAS: 36700-38-6
Formula: C₁₁H₁₄N₂S
MW: 206.31 g/mol

VQ-027680

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