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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

Varenicline Hydroxy Methyl Impurity chemical structure

Varenicline Hydroxy Methyl Impurity

Formula: C₁₄H₁₅N₃O
MW: 241.29 g/mol

In stock

Reference Standard

Varenicline Imidazole Impurity chemical structure

Varenicline Imidazole Impurity

CAS: 2759288-58-7
Formula: C₁₄H₁₂F₃N₃O
MW: 295.26 g/mol

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Reference Standard

Varenicline Impurity 23

Varenicline Impurity 23

Formula: C₂₇H₂₄N₆O
MW: 448.52 g/mol

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Reference Standard

Varenicline Impurity 3 (Freebase) chemical structure

Varenicline Impurity 3 (Freebase)

CAS: 357424-12-5
Formula: C₁₂H₁₃N₃
MW: 199.25 g/mol

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Reference Standard

Varenicline Impurity 3 (Hydrochloride) chemical structure

Varenicline Impurity 3 (Hydrochloride)

CAS: 230615-10-8
Formula: C₁₂H₁₄ClN₃
MW: 235.71 g/mol

VQ-006113

Reference Standard

Varenicline Impurity F chemical structure

Varenicline Impurity F

CAS: 357426-10-9
Formula: C₁₅H₁₂F₃N₃O₂
MW: 323.27 g/mol

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Reference Standard

Varenicline Lactam chemical structure

Varenicline Lactam

CAS: 873302-30-8
Formula: C₁₃H₁₁N₃O
MW: 225.25 g/mol

VQ-042825

Reference Standard

Varenicline Metadinitro chemical structure

Varenicline Metadinitro

CAS: 853946-18-6
Formula: C₁₃H₁₀F₃N₃O₅
MW: 345.23 g/mol

VQ-028640

Reference Standard

Varenicline Mono Nitro Amine Impurity chemical structure

Varenicline Mono Nitro Amine Impurity

CAS: 950781-89-2
Formula: C₁₃H₁₂F₃N₃O₃
MW: 315.25 g/mol

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Reference Standard

Varenicline N-Formyl Impurity chemical structure

Varenicline N-Formyl Impurity

CAS: 796865-82-2
Formula: C₁₄H₁₃N₃O
MW: 239.27 g/mol

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Reference Standard

Varenicline N-Glucoside chemical structure

Varenicline N-Glucoside

CAS: 873302-31-9
Formula: C₁₉H₂₃N₃O₅
MW: 373.4 g/mol

VQ-042828

Reference Standard

Varenicline N-Methyl Impurity chemical structure

Varenicline N-Methyl Impurity

CAS: 328055-92-1
Formula: C₁₄H₁₅N₃
MW: 225.29 g/mol

In stock

Reference Standard

Varenicline N-Trifluoroacetyl Impurity chemical structure

Varenicline N-Trifluoroacetyl Impurity

CAS: 230615-70-0
Formula: C₁₅H₁₂F₃N₃O
MW: 307.27 g/mol

In stock

Reference Standard

Varenicline Ortho Dinitro Impurity chemical structure

Varenicline Ortho Dinitro Impurity

CAS: 230615-59-5
Formula: C₁₃H₁₀F₃N₃O₅
MW: 345.23 g/mol

In stock

Reference Standard

Varenicline Tartrate Impurity C chemical structure

Varenicline Tartrate Impurity C

CAS: 2724982-86-7
Formula: C₁₃H₁₃N₃O
MW: 227.26 g/mol

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Reference Standard

VareniclineDioxo Impurity chemical structure

VareniclineDioxo Impurity

CAS: 357424-07-8
Formula: C₁₃H₁₃N₃O₂
MW: 243.26 g/mol

VQ-028644

Reference Standard

Varespladib Methyl chemical structure

Varespladib Methyl

CAS: 172733-08-3
Formula: C₂₂H₂₂N₂O₅
MW: 394.4 g/mol

VQ-044690

Reference Standard

VDesloratadine Dihydro Impurity chemical structure

VDesloratadine Dihydro Impurity

CAS: 119770-61-5
Formula: C₂₀H₂₁ClN₂
MW: 324.8 g/mol

VQ-038123

Reference Standard

Velpatasvir copovidone chemical structure

Velpatasvir copovidone

CAS: 1844064-96-5
Formula: C₃₉H₄₅N₇O₅
MW: 691.8 g/mol

VQ-034558

Reference Standard

Velpatasvir Di Isomer Impurity chemical structure

Velpatasvir Di Isomer Impurity

CAS: 1493769-28-0
Formula: C₅₃H₅₄N₈O₉
MW: 947 g/mol

VQ-034560

Reference Standard

Velpatasvir Impurity 30 chemical structure

Velpatasvir Impurity 30

CAS: 1438383-89-1
Formula: C₁₉H₁₄Br₂O₃
MW: 450.1 g/mol

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Reference Standard

Velpatasvir Keto Analog

Velpatasvir Keto Analog

CAS: 1493768-01-6
Formula: C₄₉H₅₂N₈O₉
MW: 896.99 g/mol

VQ-034559

Reference Standard

Velpatasvir MMP impurity

Velpatasvir MMP impurity

CAS: 138604-91-8
Formula: C₁₁H₁₃NO₄
MW: 223.23 g/mol

VQ-028651

Reference Standard

Velpatasvir-A12 chemical structure

Velpatasvir-A12

CAS: 1377604-63-1
Formula: C₄₉H₅₆N₈O₈
MW: 885 g/mol

VQ-042836

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