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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

tert-Butyl 8-Oxo-3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazine-7(8H)-carboxylate chemical structure

tert-Butyl 8-Oxo-3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazine-7(8H)-carboxylate

CAS: 877402-44-3
Formula: C₁₁H₁₃F₃N₄O₃
MW: 306.24 g/mol

VQ-044672

Reference Standard

tert-Butyl Benzenesulfonate chemical structure

tert-Butyl Benzenesulfonate

CAS: 91950-41-3
Formula: C₁₀H₁₄O₃S
MW: 214.28 g/mol

VQ-029281

Reference Standard

tert-Butyl Fluvastatin chemical structure

tert-Butyl Fluvastatin

CAS: 129332-29-2
Formula: C₂₈H₃₄FNO₄
MW: 467.6 g/mol

VQ-025887

Reference Standard

tert-Butyl Mesylate chemical structure

tert-Butyl Mesylate

CAS: 16427-41-1
Formula: C₅H₁₂O₃S
MW: 152.21 g/mol

VQ-032317

Reference Standard

tert-Butyl N-[5-(4-methylbenzenesulfonyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]carbamate chemical structure

tert-Butyl N-[5-(4-methylbenzenesulfonyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]carbamate

CAS: 1201187-44-1
Formula: C₁₈H₂₀N₄O₄S
MW: 388.4 g/mol

VQ-028586

Reference Standard

Tert-Butyl pyridin-3-ylcarbamate chemical structure

Tert-Butyl pyridin-3-ylcarbamate

CAS: 56700-70-0
Formula: C₁₀H₁₄N₂O₂
MW: 194.23 g/mol

VQ-035663

Reference Standard

tert-Butyl-(1S, 2R, 5S)-2-amino Edoxaban chemical structure

tert-Butyl-(1S, 2R, 5S)-2-amino Edoxaban

CAS: 2081883-55-6
Formula: C₁₄H₂₇N₃O₃
MW: 285.38 g/mol

VQ-022484

Reference Standard

tert-Butyl-2,7-diazaspiro[3.5]nonane-7-carboxylate hydrochloride chemical structure

tert-Butyl-2,7-diazaspiro[3.5]nonane-7-carboxylate hydrochloride

CAS: 1023301-84-9
Formula: C₁₂H₂₃ClN₂O₂
MW: 262.77 g/mol

VQ-040004

Reference Standard

tert-Butyl((1R,2R,5R)-2-amino-5-(dimethylcarbamoyl)cyclohexyl)carbamate chemical structure

tert-Butyl((1R,2R,5R)-2-amino-5-(dimethylcarbamoyl)cyclohexyl)carbamate

CAS: 2081883-53-4
Formula: C₁₄H₂₇N₃O₃
MW: 285.38 g/mol

VQ-030373

Reference Standard

tert-Butyl((1R,2S,5R)-2-amino-5-(dimethylcarbamoyl)cyclohexyl)carbamate chemical structure

tert-Butyl((1R,2S,5R)-2-amino-5-(dimethylcarbamoyl)cyclohexyl)carbamate

CAS: 2081883-57-8
Formula: C₁₄H₂₇N₃O₃
MW: 285.38 g/mol

VQ-030368

Reference Standard

tert-Butyl(4r-cis)-6-formaldehydel-2,2-dimethyl-1,3-dioxane-4-acetate chemical structure

tert-Butyl(4r-cis)-6-formaldehydel-2,2-dimethyl-1,3-dioxane-4-acetate

CAS: 124752-23-4
Formula: C₁₃H₂₂O₅
MW: 258.31 g/mol

VQ-027534

Reference Standard

Tert-Butyl(S)-(1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate chemical structure

Tert-Butyl(S)-(1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate

CAS: 668273-74-3
Formula: C₃₀H₃₆N₈O₄
MW: 572.7 g/mol

VQ-038050

Reference Standard

Tert-Butyl4-(2-carbamoylbenzofuran-5-yl)piperazine-1-carboxylate chemical structure

Tert-Butyl4-(2-carbamoylbenzofuran-5-yl)piperazine-1-carboxylate

CAS: 183288-44-0
Formula: C₁₈H₂₃N₃O₄
MW: 345.4 g/mol

VQ-042891

Reference Standard

tert-ButylEDO- Amina-2-carbamate enantiomer chemical structure

tert-ButylEDO- Amina-2-carbamate enantiomer

CAS: 2089454-69-1
Formula: C₁₄H₂₇N₃O₃
MW: 285.38 g/mol

VQ-030370

Reference Standard

Tertrahydroisoquin-3-carboxylic acid chemical structure

Tertrahydroisoquin-3-carboxylic acid

CAS: 67123-97-1
Formula: C₁₀H₁₁NO₂
MW: 177.2 g/mol

VQ-041797

Reference Standard

Testosterone 17-Valerate chemical structure

Testosterone 17-Valerate

CAS: 3129-43-9
Formula: C₂₄H₃₆O₃
MW: 372.5 g/mol

VQ-044022

Reference Standard

Testosterone 17β-Carboxylic Acid chemical structure

Testosterone 17β-Carboxylic Acid

CAS: 302-97-6
Formula: C₂₀H₂₈O₃
MW: 316.4 g/mol

VQ-025782

Reference Standard

Testosterone Caproate chemical structure

Testosterone Caproate

CAS: 10312-45-5
Formula: C₂₅H₃₈O₃
MW: 386.6 g/mol

VQ-043323

Reference Standard

Testosterone Impurity 4 chemical structure

Testosterone Impurity 4

CAS: 571-36-8
Formula: C₁₉H₂₆O₂
MW: 286.4 g/mol

VQ-042455

Reference Standard

Testosterone Impurity 9 chemical structure

Testosterone Impurity 9

CAS: 95369-50-9
Formula: C₂₀H₃₀O₂
MW: 302.5 g/mol

VQ-042451

Reference Standard

Testosterone Impurity D chemical structure

Testosterone Impurity D

CAS: 1156-92-9
Formula: C₁₉H₃₀O₂
MW: 290.4 g/mol

In stock

Reference Standard

Testosterone Isocaproate chemical structure

Testosterone Isocaproate

CAS: 15262-86-9
Formula: C₂₅H₃₈O₃
MW: 386.6 g/mol

VQ-034912

Reference Standard

Testosterone Laurate chemical structure

Testosterone Laurate

CAS: 59232-78-9
Formula: C₃₁H₅₀O₃
MW: 470.7 g/mol

VQ-028299

Reference Standard

Testosterone Nonanoate chemical structure

Testosterone Nonanoate

CAS: 57525-67-4
Formula: C₂₈H₄₄O₃
MW: 428.6 g/mol

VQ-043319

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