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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

Tapinarof Z-Isomer Impurity chemical structure

Tapinarof Z-Isomer Impurity

CAS: 1622988-14-0
Formula: C₁₇H₁₈O₂
MW: 254.32 g/mol

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Reference Standard

Tasimelteon Impurity D chemical structure

Tasimelteon Impurity D

CAS: 1161417-63-5
Formula: C₁₂H₁₃NO₂
MW: 203.24 g/mol

VQ-028207

Reference Standard

Tasimelteon Impurity E

Tasimelteon Impurity E

CAS: 1651831-37-6
Formula: C₁₂H₁₆ClNO
MW: 225.71 g/mol

VQ-034056

Reference Standard

Tasimelteon Impurity F

Tasimelteon Impurity F

CAS: 251562-66-0
Formula: C₁₄H₁₇NO₂
MW: 231.3 g/mol

VQ-034058

Reference Standard

Tasimelteon Impurity G chemical structure

Tasimelteon Impurity G

CAS: 251562-65-9
Formula: C₁₅H₁₉NO₂
MW: 245.32 g/mol

VQ-034051

Reference Standard

Tauro-alpha-muricholic Acid Sodium Salt chemical structure

Tauro-alpha-muricholic Acid Sodium Salt

CAS: 2260905-08-4
Formula: C₂₆H₄₄NNaO₇S
MW: 537.7 g/mol

VQ-042773

Reference Standard

Tauro-beta-muricholic Acid chemical structure

Tauro-beta-muricholic Acid

CAS: 25696-60-0
Formula: C₂₆H₄₅NO₇S
MW: 515.7 g/mol

VQ-036231

Reference Standard

Tauro-nor-THCA-24-DBD chemical structure

Tauro-nor-THCA-24-DBD

CAS: 1255908-35-0
Formula: C₃₆H₅₇N₅O₁₀S₂
MW: 784 g/mol

VQ-042374

Reference Standard

Taurochenodeoxycholic Acid Sodium chemical structure

Taurochenodeoxycholic Acid Sodium

CAS: 6009-98-9
Formula: C₂₆H₄₄NNaO₆S
MW: 521.7 g/mol

VQ-034512

Reference Standard

Taurochenodesoxycholic acid chemical structure

Taurochenodesoxycholic acid

CAS: 516-35-8
Formula: C₂₆H₄₅NO₆S
MW: 499.7 g/mol

VQ-042771

Reference Standard

Taurocholic acid 3-sulfate chemical structure

Taurocholic acid 3-sulfate

CAS: 67030-62-0
Formula: C₂₆H₄₅NO₁₀S₂
MW: 595.8 g/mol

VQ-042774

Reference Standard

Tavaborole Impurity 16 chemical structure

Tavaborole Impurity 16

CAS: 1839665-96-1
Formula: C₉H₈BrFO₂
MW: 247.06 g/mol

VQ-028212

Reference Standard

Tazarotene Sulfone chemical structure

Tazarotene Sulfone

CAS: 1262228-27-2
Formula: C₂₁H₂₁NO₄S
MW: 383.5 g/mol

VQ-023841

Reference Standard

Tazarotene Thiochromane Dimer chemical structure

Tazarotene Thiochromane Dimer

CAS: 1010805-73-8
Formula: C₂₆H₂₆S₂
MW: 402.6 g/mol

VQ-028216

Reference Standard

Tazarotenic Acid Methyl Ester chemical structure

Tazarotenic Acid Methyl Ester

CAS: 1332579-70-0
Formula: C₂₀H₁₉NO₂S
MW: 337.4 g/mol

VQ-034067

Reference Standard

Tazobactam Diastereomer chemical structure

Tazobactam Diastereomer

CAS: 115546-66-2
Formula: C₁₀H₁₂N₄O₅S
MW: 300.29 g/mol

VQ-034906

Reference Standard

Tedizolid Dimethoxy Impurity

Tedizolid Dimethoxy Impurity

CAS: 2810004-05-6
Formula: C₁₉H₂₀FN₆O₆P
MW: 478.38 g/mol

VQ-045079

Reference Standard

Tedizolid Impurity 6

Tedizolid Impurity 6

CAS: 1239662-44-2
Formula: C₃₇H₃₅F₂N₁₂O₁₀P
MW: 876.72 g/mol

VQ-042381

Reference Standard

Tedizolid Impurity F Diimidazolium chemical structure

Tedizolid Impurity F Diimidazolium

CAS: 1256966-04-7
Formula: C₃₇H₃₄F₂N₁₄O₁₁P₂
MW: 950.7 g/mol

VQ-034072

Reference Standard

Tedizolid Phosphate Dimer chemical structure

Tedizolid Phosphate Dimer

CAS: 1220910-90-6
Formula: C₃₄H₃₀F₂N₁₂O₁₁P₂
MW: 882.6 g/mol

VQ-023847

Reference Standard

Tedizolid Pyrophosphate Ester chemical structure

Tedizolid Pyrophosphate Ester

CAS: 1239662-48-6
Formula: C₁₇H₁₇FN₆O₉P₂
MW: 530.3 g/mol

VQ-028220

Reference Standard

Tegoprazan 4-methylphenylsulfonyl Impurity

Tegoprazan 4-methylphenylsulfonyl Impurity

CAS: 942485-42-9
Formula: C₂₇H₂₅F₂N₃O₅S
MW: 541.57 g/mol

VQ-028227

Reference Standard

Tegoprazan Impurity 32 chemical structure

Tegoprazan Impurity 32

CAS: 1640981-05-0
Formula: C₁₇H₁₈N₂O₄
MW: 314.34 g/mol

VQ-042387

Reference Standard

Tegoprazan Tosyl Impurity chemical structure

Tegoprazan Tosyl Impurity

CAS: 942195-85-9
Formula: C₂₅H₂₅N₃O₄S
MW: 463.6 g/mol

VQ-035509

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