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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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Reference Standard

Abemaciclib Ethyl Impurity

Abemaciclib Ethyl Impurity

Formula: C₁₇H₁₈F₂N₄O
MW: 332.35 g/mol

In stock

Reference Standard

Abemaciclib Impurity 1 chemical structure

Abemaciclib Impurity 1

CAS: 1180132-17-5
Formula: C₁₂H₂₀N₄
MW: 220.31 g/mol

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Reference Standard

Abemaciclib Impurity 10 chemical structure

Abemaciclib Impurity 10

CAS: 1231930-37-2
Formula: C₁₇H₂₄BFN₂O₂
MW: 318.2 g/mol

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Reference Standard

Abemaciclib Impurity 13

Abemaciclib Impurity 13

Formula: C₂₇H₃₂F₂N₈
MW: 506.59 g/mol

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Reference Standard

Abemaciclib Impurity 2 chemical structure

Abemaciclib Impurity 2

CAS: 1231930-42-9
Formula: C₁₅H₁₃ClF₂N₄
MW: 322.74 g/mol

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Reference Standard

Abemaciclib Impurity 24 chemical structure

Abemaciclib Impurity 24

CAS: 1178566-52-3
Formula: C₁₅H₂₄N₄O₂
MW: 292.38 g/mol

VQ-035567

Reference Standard

Abemaciclib Impurity 29 chemical structure

Abemaciclib Impurity 29

CAS: 141838-75-7
Formula: C₁₁H₁₄N₂
MW: 174.24 g/mol

VQ-047303

Reference Standard

Abemaciclib Impurity 31 chemical structure

Abemaciclib Impurity 31

CAS: 1873303-32-2
Formula: C₁₅H₁₄ClFN₄
MW: 304.75 g/mol

In stock

Reference Standard

Abemaciclib Impurity 32 chemical structure

Abemaciclib Impurity 32

CAS: 1231930-47-4
Formula: C₁₅H₁₄ClFN₄
MW: 304.75 g/mol

In stock

Reference Standard

Abemaciclib Impurity 39 chemical structure

Abemaciclib Impurity 39

CAS: 1178566-47-6
Formula: C₁₀H₁₆N₄
MW: 192.26 g/mol

In stock

Reference Standard

Abemaciclib Piperazine Dimer Impurity

Abemaciclib Piperazine Dimer Impurity

Formula: C₄₆H₄₆F₄N₁₄
MW: 870.94 g/mol

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Reference Standard

Abiraterone 3-Iodine Impurity chemical structure

Abiraterone 3-Iodine Impurity

CAS: 1268610-38-3
Formula: C₁₉H₂₄I₂
MW: 506.2 g/mol

VQ-028981

Reference Standard

Abiraterone Acetate 17-Methyl Impurity chemical structure

Abiraterone Acetate 17-Methyl Impurity

CAS: 23930-63-4
Formula: C₂₁H₃₀O₂
MW: 314.5 g/mol

VQ-024110

Reference Standard

Abiraterone Acetate 5,6-Epoxide chemical structure

Abiraterone Acetate 5,6-Epoxide

CAS: 1868064-50-9
Formula: C₂₆H₃₃NO₃
MW: 407.5 g/mol

VQ-021382

Reference Standard

Abiraterone Acetate Di Acetoxy Dimer chemical structure

Abiraterone Acetate Di Acetoxy Dimer

CAS: 1613026-24-6
Formula: C₄₂H₆₀N₂O₄
MW: 656.9 g/mol

VQ-024117

Reference Standard

Abiraterone Acetate Diastereomer chemical structure

Abiraterone Acetate Diastereomer

CAS: 2484719-10-8
Formula: C₂₆H₃₃NO₂
MW: 391.5 g/mol

VQ-021387

Reference Standard

Abiraterone Acetate N-Acetyl Impurity chemical structure

Abiraterone Acetate N-Acetyl Impurity

CAS: 75980-86-8
Formula: C₂₃H₃₄N₂O₃
MW: 386.5 g/mol

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Reference Standard

Abiraterone Acetate P-Toluene Sulfonyl Ester

Abiraterone Acetate P-Toluene Sulfonyl Ester

CAS: 1382475-35-5
Formula: C₂₅H₃₃NO₃S
MW: 427.6 g/mol

VQ-024114

Reference Standard

Abiraterone Dimer Impurity (Prasteronyl Abiraterone) chemical structure

Abiraterone Dimer Impurity (Prasteronyl Abiraterone)

CAS: 2484719-09-5
Formula: C₄₃H₅₇NO₂
MW: 619.9 g/mol

VQ-021379

Reference Standard

Abiraterone Impurity 11

Abiraterone Impurity 11

CAS: 70226-84-5
Formula: C₂₃H₃₂O₄
MW: 372.51 g/mol

VQ-045274

Reference Standard

Abiraterone Impurity 19

Abiraterone Impurity 19

CAS: 846-43-5
Formula: C₂₀H₃₀O
MW: 286.5 g/mol

VQ-044305

Reference Standard

Abiraterone Impurity 32 chemical structure

Abiraterone Impurity 32

CAS: 86770-60-7
Formula: C₁₉H₂₈I₂O
MW: 526.2 g/mol

VQ-021388

Reference Standard

Abiraterone Impurity 4 chemical structure

Abiraterone Impurity 4

CAS: 2118-32-3
Formula: C₂₃H₃₄O₂
MW: 342.5 g/mol

VQ-021389

Reference Standard

Abiraterone Impurity 6

Abiraterone Impurity 6

CAS: 58400-99-0
Formula: C₃₁H₄₆O₇
MW: 530.69 g/mol

VQ-035574

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