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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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COA + SDSwith every lot

Reference Standard

Revefenacin Impurity 31

Revefenacin Impurity 31

CAS: 1821022-36-9
Formula: C₈H₆Br₂O
MW: 277.9 g/mol

VQ-044568

Reference Standard

Revefenacin Impurity 32

Revefenacin Impurity 32

CAS: 864751-29-1
Formula: C₃₄H₄₁N₅O₄
MW: 583.7 g/mol

VQ-033517

Reference Standard

Rhein 8-Glucoside chemical structure

Rhein 8-Glucoside

CAS: 34298-86-7
Formula: C₂₁H₁₈O₁₁
MW: 446.4 g/mol

VQ-040102

Reference Standard

Rheinanthrone chemical structure

CAS: 480-09-1
Formula: C₁₅H₁₀O₅
MW: 270.24 g/mol

VQ-040235

Reference Standard

Rhodanine-3-acetic acid chemical structure

Rhodanine-3-acetic acid

CAS: 5718-83-2
Formula: C₅H₅NO₃S₂
MW: 191.2 g/mol

VQ-030505

Reference Standard

Ribavirin Impurity E chemical structure

Ribavirin Impurity E

CAS: 58151-90-9
Formula: C₁₅H₁₆N₄O₆
MW: 348.31 g/mol

VQ-035104

Reference Standard

Ribociclib Chloro Amide Impurity chemical structure

Ribociclib Chloro Amide Impurity

CAS: 1211443-61-6
Formula: C₁₄H₁₇ClN₄O
MW: 292.76 g/mol

VQ-027790

Reference Standard

Ribociclib Impurity 20 chemical structure

Ribociclib Impurity 20

CAS: 2481084-18-6
Formula: C₉H₁₁Br₂N₃
MW: 321.01 g/mol

VQ-033526

Reference Standard

Ribociclib Impurity 49 chemical structure

Ribociclib Impurity 49

CAS: 2250106-77-3
Formula: C₂₆H₃₃N₇O₄
MW: 507.6 g/mol

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Reference Standard

Ribociclib Impurity D chemical structure

Ribociclib Impurity D

CAS: 3060653-14-4
Formula: C₂₇H₃₄N₈O₄
MW: 534.6 g/mol

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Reference Standard

Ribociclib Impurity-12

Ribociclib Impurity-12

Formula: C₂₆H₃₀ClN₇O₂
MW: 508.02 g/mol

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Reference Standard

Ribociclib Impurity-2 chemical structure

Ribociclib Impurity-2

CAS: 2460738-27-4
Formula: C₂₁H₂₉ClN₈O
MW: 445 g/mol

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Reference Standard

Ribociclib Impurity-4 (Freebase)

Ribociclib Impurity-4 (Freebase)

CAS: 3027550-95-1
Formula: C₂₃H₃₀N₈O₂
MW: 450.54 g/mol

VQ-005759

Reference Standard

Ribociclib Impurity-4 (Hydrochloride)

Ribociclib Impurity-4 (Hydrochloride)

Formula: C₂₃H₃₀N₈O₂.ClH
MW: 487.04 g/mol

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Reference Standard

Ribociclib Impurity-7

Ribociclib Impurity-7

CAS: 3027550-96-2
Formula: C₂₂H₂₈N₈O₂
MW: 436.51 g/mol

VQ-005761

Reference Standard

Ribociclib Methyl Amide Impurity chemical structure

Ribociclib Methyl Amide Impurity

CAS: 3066072-08-7
Formula: C₂₇H₃₆N₈O₃
MW: 520.6 g/mol

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Reference Standard

Ribociclib Methyl ester Impurity

Ribociclib Methyl ester Impurity

CAS: 3027550-97-3
Formula: C₂₂H₂₇N₇O₂
MW: 421.5 g/mol

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Reference Standard

Ribociclib N-Formyl Impurity chemical structure

Ribociclib N-Formyl Impurity

CAS: 2460732-08-3
Formula: C₂₄H₃₀N₈O₂
MW: 462.5 g/mol

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Reference Standard

Ribociclib Succinate Piperazine amide impurity

Ribociclib Succinate Piperazine amide impurity

CAS: 3056250-51-9
Formula: C₁₈H₂₆N₆O
MW: 342.45 g/mol

VQ-033529

Reference Standard

Ribociclib Unknown Impurity-04

Ribociclib Unknown Impurity-04

Formula: C₂₆H₃₀ClN₇O₂
MW: 508.02 g/mol

In stock

Reference Standard

Ribociclib Unknown Impurity-05

Ribociclib Unknown Impurity-05

Formula: C₂₄H₂₇ClN₆O₂
MW: 466.96 g/mol

VQ-005766

Reference Standard

Ribociclib Unknown Impurity-07

Ribociclib Unknown Impurity-07

Formula: C₂₄H₂₇ClN₆O₂
MW: 466.96 g/mol

VQ-005767

Reference Standard

Ribociclib Unknown Impurity-08

Ribociclib Unknown Impurity-08

Formula: C₂₄H₂₇ClN₆O₂
MW: 466.96 g/mol

In stock

Reference Standard

Ribociclib Unknown Impurity-09 chemical structure

Ribociclib Unknown Impurity-09

CAS: 120613-50-5
Formula: C₁₀H₆Cl₂N₄O
MW: 269.08 g/mol

In stock

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