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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

Risedronate Sodium Hydrate chemical structure

Risedronate Sodium Hydrate

CAS: 353228-19-0
Formula: C₇H₁₂NNaO₈P₂
MW: 323.11 g/mol

VQ-041930

Reference Standard

Risedronic acid chemical structure

Risedronic acid

CAS: 105462-24-6
Formula: C₇H₁₁NO₇P₂
MW: 283.11 g/mol

VQ-023646

Reference Standard

Risedronic acid-d4 chemical structure

Risedronic acid-d4

CAS: 1035438-80-2
Formula: C₇H₁₁NO₇P₂
MW: 287.14 g/mol

VQ-033566

Reference Standard

Risperidone chemical structure

CAS: 106266-06-2
Formula: C₂₃H₂₇FN₄O₂
MW: 410.5 g/mol

In stock

Reference Standard

Risperidone - Impurity J chemical structure

Risperidone - Impurity J

CAS: 1346606-24-3
Formula: C₃₅H₄₀F₂N₆O₃
MW: 630.7 g/mol

VQ-033567

Reference Standard

Risperidone cis-N-oxide Monohydrate chemical structure

Risperidone cis-N-oxide Monohydrate

CAS: 1894509-67-1
Formula: C₂₃H₂₇FN₄O₃
MW: 426.5 g/mol

VQ-033576

Reference Standard

Risperidone Degradation Product chemical structure

Risperidone Degradation Product

CAS: 832747-59-8
Formula: C₁₁H₁₄N₂O
MW: 190.24 g/mol

VQ-027838

Reference Standard

Risperidone Difluoro Acetyl Impurity chemical structure

Risperidone Difluoro Acetyl Impurity

CAS: 84162-82-3
Formula: C₁₄H₁₅F₂NO₂
MW: 267.27 g/mol

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Reference Standard

Risperidone Dimer Impurity chemical structure

Risperidone Dimer Impurity

CAS: 531524-17-1
Formula: C₂₄H₂₅FN₄O₂
MW: 420.5 g/mol

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Reference Standard

Risperidone E,Z-Oxime (Mixture) chemical structure

Risperidone E,Z-Oxime (Mixture)

CAS: 158697-66-6
Formula: C₂₃H₂₈F₂N₄O₂
MW: 430.5 g/mol

VQ-033569

Reference Standard

Risperidone EP Impurity A chemical structure

Risperidone EP Impurity A

CAS: 691007-09-7
Formula: C₂₃H₂₈F₂N₄O₂
MW: 430.5 g/mol

VQ-006638

Reference Standard

Risperidone EP Impurity B chemical structure

Risperidone EP Impurity B

CAS: 132961-05-8
Formula: C₂₃H₂₈F₂N₄O₂
MW: 430.5 g/mol

In stock

Reference Standard

Risperidone EP Impurity C chemical structure

Risperidone EP Impurity C

CAS: 144598-75-4
Formula: C₂₃H₂₇FN₄O₃
MW: 426.5 g/mol

In stock

Reference Standard

Risperidone EP Impurity D chemical structure

Risperidone EP Impurity D

CAS: 1199589-74-6
Formula: C₂₃H₂₇FN₄O₂
MW: 410.5 g/mol

In stock

Reference Standard

Risperidone EP Impurity E chemical structure

Risperidone EP Impurity E

CAS: 1346602-28-5
Formula: C₂₄H₂₉FN₄O₂
MW: 424.5 g/mol

In stock

Reference Standard

Risperidone EP Impurity F chemical structure

Risperidone EP Impurity F

CAS: 1346603-86-8
Formula: C₂₄H₂₇FN₄O₄
MW: 454.5 g/mol

VQ-027835

Reference Standard

Risperidone EP Impurity H chemical structure

Risperidone EP Impurity H

CAS: 158697-67-7
Formula: C₂₃H₂₇F₂N₃O₂
MW: 415.5 g/mol

In stock

Reference Standard

Risperidone EP Impurity I chemical structure

Risperidone EP Impurity I

CAS: 1329796-66-8
Formula: C₃₅H₃₉F₂N₅O₃
MW: 615.7 g/mol

In stock

Reference Standard

Risperidone EP Impurity K chemical structure

Risperidone EP Impurity K

CAS: 106266-09-5
Formula: C₂₃H₂₈N₄O₂
MW: 392.5 g/mol

In stock

Reference Standard

Risperidone EP Impurity L chemical structure

Risperidone EP Impurity L

CAS: 63234-80-0
Formula: C₁₁H₁₅ClN₂O
MW: 226.7 g/mol

VQ-006646

Reference Standard

Risperidone EP Impurity L (Hydrochloride) chemical structure

Risperidone EP Impurity L (Hydrochloride)

CAS: 93076-03-0
Formula: C₁₁H₁₆Cl₂N₂O
MW: 263.16 g/mol

VQ-006647

Reference Standard

Risperidone EP Impurity M (Freebase) chemical structure

Risperidone EP Impurity M (Freebase)

CAS: 84163-77-9
Formula: C₁₂H₁₃FN₂O
MW: 220.24 g/mol

VQ-006648

Reference Standard

Risperidone EP Impurity M (Hydrochloride) chemical structure

Risperidone EP Impurity M (Hydrochloride)

CAS: 84163-13-3
Formula: C₁₂H₁₄ClFN₂O
MW: 256.7 g/mol

In stock

Reference Standard

Risperidone Ethyl Impurity chemical structure

Risperidone Ethyl Impurity

CAS: 70381-58-7
Formula: C₁₁H₁₆N₂O
MW: 192.26 g/mol

VQ-041933

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