Skip to content

Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

14,098products

1,516in stock

COA + SDSwith every lot

Reference Standard

Tafamidis Impurity 10 chemical structure

Tafamidis Impurity 10

CAS: 1018498-30-0
Formula: C₁₄H₈ClNO₃
MW: 273.67 g/mol

In stock

Reference Standard

Tafamidis Impurity 23

Tafamidis Impurity 23

CAS: 2892700-63-7
Formula: C₁₆H₁₂Cl₂N₂O₂
MW: 335.19 g/mol

In stock

Reference Standard

Tafamidis Impurity 24

Tafamidis Impurity 24

Formula: C₁₄H₁₀Cl₂N₂O₄
MW: 341.15 g/mol

In stock

Reference Standard

Tafamidis Impurity 3 chemical structure

Tafamidis Impurity 3

CAS: 1184581-58-5
Formula: C₁₄H₉Cl₂NO₄
MW: 326.1 g/mol

In stock

Reference Standard

Tafamidis Impurity 4 chemical structure

Tafamidis Impurity 4

CAS: 1507158-86-2
Formula: C₁₄H₇Cl₂NO₃
MW: 308.1 g/mol

In stock

Reference Standard

Tafenoquine Impurity 5 chemical structure

Tafenoquine Impurity 5

CAS: 5342-23-4
Formula: C₁₁H₁₁NO₂
MW: 189.21 g/mol

In stock

Reference Standard

Tafenoquine Impurity 7 chemical structure

Tafenoquine Impurity 7

CAS: 189746-19-8
Formula: C₁₂H₁₂ClNO₂
MW: 237.68 g/mol

In stock

Reference Standard

Tafenoquine Impurity 8 chemical structure

Tafenoquine Impurity 8

CAS: 189746-21-2
Formula: C₁₂H₁₁ClN₂O₄
MW: 282.68 g/mol

In stock

Reference Standard

Tafenoquine Impurity 9 chemical structure

Tafenoquine Impurity 9

CAS: 189746-15-4
Formula: C₁₉H₁₅F₃N₂O₅
MW: 408.3 g/mol

In stock

Reference Standard

Tafluprost Acid chemical structure

Tafluprost Acid

CAS: 209860-88-8
Formula: C₂₂H₂₈F₂O₅
MW: 410.5 g/mol

VQ-028351

Reference Standard

Tafluprost ethyl amide chemical structure

Tafluprost ethyl amide

CAS: 1185851-52-8
Formula: C₂₄H₃₃F₂NO₄
MW: 437.5 g/mol

VQ-034029

Reference Standard

Tafluprost Impurity 1 chemical structure

Tafluprost Impurity 1

CAS: 2512198-63-7
Formula: C₁₉H₂₄NO₂P
MW: 329.4 g/mol

VQ-042351

Reference Standard

Tafluprost Mono Fluoro Impurity chemical structure

Tafluprost Mono Fluoro Impurity

CAS: 2587078-46-2
Formula: C₂₅H₃₅FO₅
MW: 434.5 g/mol

VQ-042352

Reference Standard

Tamatinib chemical structure

CAS: 841290-80-0
Formula: C₂₂H₂₃FN₆O₅
MW: 470.5 g/mol

VQ-025926

Reference Standard

Tamoxifen Dimer chemical structure

Tamoxifen Dimer

CAS: 1346606-51-6
Formula: C₄₉H₄₉NO₂
MW: 683.9 g/mol

VQ-034032

Reference Standard

Tamsulosin Catechol chemical structure

Tamsulosin Catechol

CAS: 176223-30-6
Formula: C₁₈H₂₄N₂O₅S
MW: 380.5 g/mol

VQ-044195

Reference Standard

Tamsulosin Impurity A chemical structure

Tamsulosin Impurity A

CAS: 3250-73-5
Formula: C₁₀H₁₄O₃
MW: 182.22 g/mol

VQ-034038

Reference Standard

Tamsulosin Methoxy Impurity chemical structure

Tamsulosin Methoxy Impurity

CAS: 94666-11-2
Formula: C₁₉H₂₆N₂O₅S
MW: 394.5 g/mol

VQ-042364

Reference Standard

Tamsulosin S-Isomer Hydrochloride Salt chemical structure

Tamsulosin S-Isomer Hydrochloride Salt

CAS: 106463-19-8
Formula: C₂₀H₂₉ClN₂O₅S
MW: 445 g/mol

In stock

Reference Standard

Tamsulosin Sulfonamide chemical structure

Tamsulosin Sulfonamide

CAS: 855298-56-5
Formula: C₁₂H₁₇ClN₂O₄S
MW: 320.79 g/mol

VQ-042365

Reference Standard

Tamsulosin Sulfonic Acid chemical structure

Tamsulosin Sulfonic Acid

CAS: 890708-67-5
Formula: C₂₀H₂₇NO₆S
MW: 409.5 g/mol

VQ-028201

Reference Standard

Tapentadol O-Sulfate chemical structure

Tapentadol O-Sulfate

CAS: 1300037-87-9
Formula: C₁₄H₂₃NO₄S
MW: 301.4 g/mol

VQ-043314

Reference Standard

Tapinarof Mono methoxy impurity chemical structure

Tapinarof Mono methoxy impurity

CAS: 2901016-39-3
Formula: C₁₈H₂₀O₂
MW: 268.3 g/mol

VQ-023838

Reference Standard

Tapinarof Phosphate Impurity chemical structure

Tapinarof Phosphate Impurity

CAS: 443982-76-1
Formula: C₁₆H₂₇O₅P
MW: 330.36 g/mol

In stock

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.

Request a quote Contact sales