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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

Tiocloxacillin chemical structure

CAS: 5053-36-1
Formula: C₁₉H₁₈ClN₃O₄S₂
MW: 451.9 g/mol

VQ-025070

Reference Standard

Tiopronin Disulfide chemical structure

Tiopronin Disulfide

CAS: 21269-37-4
Formula: C₁₀H₁₆N₂O₆S₂
MW: 324.4 g/mol

VQ-028400

Reference Standard

Tiopronin Impurity 1 chemical structure

Tiopronin Impurity 1

CAS: 6182-96-3
Formula: C₇H₁₁NO₄S
MW: 205.23 g/mol

VQ-034286

Reference Standard

Tiotixene impurity- 2 chemical structure

Tiotixene impurity- 2

CAS: 3285-51-6
Formula: C₉H₁₀BrNO₄S
MW: 308.15 g/mol

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Reference Standard

Tiotixene impurity- 4 chemical structure

Tiotixene impurity- 4

CAS: 3285-53-8
Formula: C₁₅H₁₃NO₃S₂
MW: 319.4 g/mol

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Reference Standard

Tiotixene impurity-1 chemical structure

Tiotixene impurity-1

CAS: 3285-31-2
Formula: C₇H₄BrClO₄S
MW: 299.53 g/mol

In stock

Reference Standard

Tiotixene impurity-3

Tiotixene impurity-3

CAS: 3285-52-7
Formula: C₁₅H₁₅NO₄S₂
MW: 337.41 g/mol

In stock

Reference Standard

Tipiracil Amide Impurity chemical structure

Tipiracil Amide Impurity

CAS: 2101241-71-6
Formula: C₉H₁₀ClN₃O₃
MW: 243.65 g/mol

VQ-034292

Reference Standard

Tipiracil Impurity 3 chemical structure

Tipiracil Impurity 3

CAS: 183205-17-6
Formula: C₅H₆ClN₃O₂
MW: 175.57 g/mol

VQ-042565

Reference Standard

Tirbanibulin Impurity E chemical structure

Tirbanibulin Impurity E

CAS: 3057380-07-8
Formula: C₂₂H₂₃N₃O₂
MW: 361.4 g/mol

VQ-042566

Reference Standard

Tirofiban Impurity 1 chemical structure

Tirofiban Impurity 1

CAS: 2386-54-1
Formula: C₄H₉NaO₃S
MW: 160.17 g/mol

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Reference Standard

Tirofiban Impurity B chemical structure

Tirofiban Impurity B

CAS: 149463-65-0
Formula: C₉H₁₃Cl₂N
MW: 206.11 g/mol

VQ-042569

Reference Standard

Tiropramide impurity A chemical structure

Tiropramide impurity A

CAS: 14325-35-0
Formula: C₂₃H₁₉NO₅
MW: 389.4 g/mol

VQ-042572

Reference Standard

Tirzepatide Sidechain chemical structure

Tirzepatide Sidechain

CAS: 2915356-76-0
Formula: C₆₆H₁₀₅N₅O₁₆
MW: 1224.6 g/mol

VQ-042573

Reference Standard

Tivozanib Impurity A chemical structure

Tivozanib Impurity A

CAS: 3051498-24-6
Formula: C₂₈H₂₄ClN₃O₅
MW: 518 g/mol

In stock

Reference Standard

Tivozanib Impurity B

Tivozanib Impurity B

CAS: 3051498-34-8
Formula: C₂₄H₁₉ClN₂O₅
MW: 450.87 g/mol

In stock

Reference Standard

Tivozanib Impurity C chemical structure

Tivozanib Impurity C

CAS: 3051498-20-2
Formula: C₃₅H₂₈Cl₂N₄O₇
MW: 687.5 g/mol

In stock

Reference Standard

Tivozanib Impurity D chemical structure

Tivozanib Impurity D

CAS: 1796383-31-7
Formula: C₉H₁₀N₄O₃
MW: 222.2 g/mol

In stock

Reference Standard

Tizanidine Dehydro Impurity chemical structure

Tizanidine Dehydro Impurity

CAS: 125292-34-4
Formula: C₉H₆ClN₅S
MW: 251.7 g/mol

VQ-045356

Reference Standard

Tizanidine Guanidine Impurity chemical structure

Tizanidine Guanidine Impurity

CAS: 125292-37-7
Formula: C₇H₆ClN₅S
MW: 227.68 g/mol

VQ-028411

Reference Standard

Tizanidine Impurity D (Free Base) chemical structure

Tizanidine Impurity D (Free Base)

CAS: 560120-68-5
Formula: C₈H₇ClN₄S₂
MW: 258.8 g/mol

VQ-006038

Reference Standard

Tizanidine Impurity D (Hydriodide Salt) chemical structure

Tizanidine Impurity D (Hydriodide Salt)

CAS: 51323-03-6
Formula: C₈H₈ClIN₄S₂
MW: 386.7 g/mol

In stock

Reference Standard

Tizanidine Impurity F chemical structure

Tizanidine Impurity F

CAS: 1147548-85-3
Formula: C₁₆H₁₁Cl₂N₉S₂
MW: 464.4 g/mol

In stock

Reference Standard

TMS- Hydroxy Canagliflozin chemical structure

TMS- Hydroxy Canagliflozin

CAS: 1132832-76-8
Formula: C₃₆H₅₇FO₆SSi₄
MW: 749.2 g/mol

VQ-036108

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