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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

Glycopyrronium bromide Impurity 5 chemical structure

Glycopyrronium bromide Impurity 5

CAS: 1404453-63-9
Formula: C₁₃H₁₄O₃
MW: 218.25 g/mol

VQ-037550

Reference Standard

Gramisterin chemical structure

CAS: 1176-52-9
Formula: C₂₉H₄₈O
MW: 412.7 g/mol

VQ-036100

Reference Standard

Griseofulvic Acid chemical structure

Griseofulvic Acid

CAS: 469-54-5
Formula: C₁₆H₁₅ClO₆
MW: 338.74 g/mol

VQ-026030

Reference Standard

Guaiacol allyl ether chemical structure

Guaiacol allyl ether

CAS: 4125-43-3
Formula: C₁₀H₁₂O₂
MW: 164.2 g/mol

VQ-039752

Reference Standard

Guaifenasin Impurity C chemical structure

Guaifenasin Impurity C

CAS: 1797132-23-0
Formula: C₂₀H₂₆O₇
MW: 378.4 g/mol

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Reference Standard

Guanfacine Methyl Ester Impurity chemical structure

Guanfacine Methyl Ester Impurity

CAS: 54551-83-6
Formula: C₉H₈Cl₂O₂
MW: 219.06 g/mol

VQ-026032

Reference Standard

Guanidine, N,N'''-(6-amino-1,3,5-triazine-2,4-diyl)bis chemical structure

Guanidine, N,N'''-(6-amino-1,3,5-triazine-2,4-diyl)bis

CAS: 26690-75-5
Formula: C₅H₁₀N₁₀
MW: 210.2 g/mol

VQ-049061

Reference Standard

Guanine 9-beta-D-Arabinofuranoside chemical structure

Guanine 9-beta-D-Arabinofuranoside

CAS: 38819-10-2
Formula: C₁₀H₁₃N₅O₅
MW: 283.24 g/mol

VQ-024144

Reference Standard

Gymnemagenin chemical structure

CAS: 22467-07-8
Formula: C₃₀H₅₀O₆
MW: 506.7 g/mol

VQ-031044

Reference Standard

H-Ala-Ala-Gln-OH chemical structure

H-Ala-Ala-Gln-OH

CAS: 290312-62-8
Formula: C₁₁H₂₀N₄O₅
MW: 288.3 g/mol

VQ-027204

Reference Standard

H-Ala-Glu-OH chemical structure

CAS: 13187-90-1
Formula: C₈H₁₄N₂O₅
MW: 218.21 g/mol

VQ-027181

Reference Standard

H-L-His(2-Oxo)-OH.HCL chemical structure

H-L-His(2-Oxo)-OH.HCL

CAS: 2580100-34-9
Formula: C₆H₁₀ClN₃O₃
MW: 207.61 g/mol

VQ-035298

Reference Standard

Halobetasol Propionate Impurity D chemical structure

Halobetasol Propionate Impurity D

CAS: 66852-61-7
Formula: C₂₅H₃₁Cl₂FO₅
MW: 501.4 g/mol

VQ-026036

Reference Standard

Halobetasol Spiro Analog

Halobetasol Spiro Analog

CAS: 912360-04-4
Formula: C₂₅H₂₉ClF₂O₄
MW: 466.95 g/mol

VQ-026040

Reference Standard

Haloperidol Cyclopropyl Derivative chemical structure

Haloperidol Cyclopropyl Derivative

CAS: 185626-66-8
Formula: C₂₁H₂₂ClNO₂
MW: 355.9 g/mol

VQ-022786

Reference Standard

Haloperidol Impurity 13 chemical structure

Haloperidol Impurity 13

CAS: 17135-46-5
Formula: C₁₁H₁₂ClFO
MW: 214.66 g/mol

VQ-048571

Reference Standard

Hamamelitannin chemical structure

CAS: 469-32-9
Formula: C₂₀H₂₀O₁₄
MW: 484.4 g/mol

VQ-039981

Reference Standard

Hematein chemical structure

CAS: 475-25-2
Formula: C₁₆H₁₂O₆
MW: 300.26 g/mol

VQ-040613

Reference Standard

Heneicosapentaenoic Acid Ethyl Ester chemical structure

Heneicosapentaenoic Acid Ethyl Ester

CAS: 131775-86-5
Formula: C₂₃H₃₆O₂
MW: 344.5 g/mol

VQ-032397

Reference Standard

Heneicosapentaenoic Acid methyl ester chemical structure

Heneicosapentaenoic Acid methyl ester

CAS: 65919-53-1
Formula: C₂₂H₃₄O₂
MW: 330.5 g/mol

VQ-039580

Reference Standard

Heptachlorodibenzo-p-dioxin chemical structure

Heptachlorodibenzo-p-dioxin

CAS: 35822-46-9
Formula: C₁₂HCl₇O₂
MW: 425.3 g/mol

VQ-039047

Reference Standard

Heptadecyl (2-(trimethylammonio)ethyl) phosphate

Heptadecyl (2-(trimethylammonio)ethyl) phosphate

CAS: 139256-98-7
Formula: C₂₂H₄₈NO₄P
MW: 421.6 g/mol

VQ-049120

Reference Standard

Heptaminol Hydrochloride - Impurity A chemical structure

Heptaminol Hydrochloride - Impurity A

CAS: 22462-79-9
Formula: C₈H₁₇N
MW: 127.23 g/mol

VQ-043739

Reference Standard

Heptane-1,1,7-Tricarboxylic Acid chemical structure

Heptane-1,1,7-Tricarboxylic Acid

CAS: 855957-40-3
Formula: C₁₀H₁₆O₆
MW: 232.23 g/mol

VQ-024469

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