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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

Teicoplanin A2-1a chemical structure

Teicoplanin A2-1a

CAS: 122043-87-2
Formula: C₈₇H₉₅Cl₂N₉O₃₃
MW: 1865.6 g/mol

VQ-042389

Reference Standard

Teicoplanin A2-1b chemical structure

Teicoplanin A2-1b

CAS: 122018-64-8
Formula: C₈₇H₉₅Cl₂N₉O₃₃
MW: 1865.6 g/mol

VQ-042390

Reference Standard

Telmisartan Bromo Acid Impurity chemical structure

Telmisartan Bromo Acid Impurity

CAS: 150766-86-2
Formula: C₁₄H₁₁BrO₂
MW: 291.14 g/mol

VQ-005988

Reference Standard

Telmisartan Bromo Amide chemical structure

Telmisartan Bromo Amide

CAS: 147404-72-6
Formula: C₁₄H₁₂BrNO
MW: 290.15 g/mol

VQ-028232

Reference Standard

Telmisartan dibromo acid impurity chemical structure

Telmisartan dibromo acid impurity

CAS: 1797894-62-2
Formula: C₁₄H₁₀Br₂O₂
MW: 370.03 g/mol

VQ-023852

Reference Standard

Telmisartan Dimer Ester Impurity chemical structure

Telmisartan Dimer Ester Impurity

CAS: 884330-13-6
Formula: C₄₈H₄₂N₄O₄
MW: 738.9 g/mol

VQ-034085

Reference Standard

Telmisartan Dimer Impurity chemical structure

Telmisartan Dimer Impurity

CAS: 884330-14-7
Formula: C₄₆H₃₈N₄O₄
MW: 710.8 g/mol

In stock

Reference Standard

Telmisartan Ethyl Ester chemical structure

Telmisartan Ethyl Ester

CAS: 528560-94-3
Formula: C₃₅H₃₄N₄O₂
MW: 542.7 g/mol

VQ-028233

Reference Standard

Telmisartan Impurity 10 chemical structure

Telmisartan Impurity 10

CAS: 959987-48-5
Formula: C₁₂H₁₄N₂O₅
MW: 266.25 g/mol

In stock

Reference Standard

Telmisartan Impurity 17 chemical structure

Telmisartan Impurity 17

CAS: 916332-38-2
Formula: C₂₈H₂₈N₂O₄
MW: 456.5 g/mol

In stock

Reference Standard

Telmisartan Impurity 21 chemical structure

Telmisartan Impurity 21

CAS: 210113-71-6
Formula: C₁₃H₁₀BrCl
MW: 281.57 g/mol

VQ-042396

Reference Standard

Telmisartan Impurity 23 chemical structure

Telmisartan Impurity 23

CAS: 1083158-66-0
Formula: C₁₉H₂₀N₄O₃
MW: 352.4 g/mol

In stock

Reference Standard

Telmisartan Impurity 25 chemical structure

Telmisartan Impurity 25

CAS: 884330-16-9
Formula: C₁₂H₁₆N₂O₃
MW: 236.27 g/mol

In stock

Reference Standard

Telmisartan Impurity 31 chemical structure

Telmisartan Impurity 31

CAS: 884330-18-1
Formula: C₁₉H₂₂N₄O
MW: 322.4 g/mol

VQ-034084

Reference Standard

Telmisartan Impurity 69 chemical structure

Telmisartan Impurity 69

CAS: 2326298-47-7
Formula: C₁₂H₁₆N₂O₂
MW: 220.27 g/mol

VQ-042397

Reference Standard

Telmisartan Impurity-B (Stage-VI) chemical structure

Telmisartan Impurity-B (Stage-VI)

CAS: 1338830-33-3
Formula: C₃₄H₃₂N₄O₅
MW: 576.6 g/mol

In stock

Reference Standard

Telmisartan Isomer T-Butyl Ester chemical structure

Telmisartan Isomer T-Butyl Ester

CAS: 1026438-56-1
Formula: C₃₇H₃₈N₄O₂
MW: 570.7 g/mol

VQ-034082

Reference Standard

Temgicoluril chemical structure

CAS: 10095-06-4
Formula: C₈H₁₄N₄O₂
MW: 198.22 g/mol

VQ-042403

Reference Standard

Temsirolimus Isomer C chemical structure

Temsirolimus Isomer C

CAS: 1027067-40-8
Formula: C₅₆H₈₇NO₁₆
MW: 1030.3 g/mol

VQ-043692

Reference Standard

Teneligliptin Carboxylic Acid chemical structure

Teneligliptin Carboxylic Acid

CAS: 2407632-38-4
Formula: C₁₉H₂₅N₅O₂
MW: 355.4 g/mol

VQ-028243

Reference Standard

Teneligliptin Impurity 24 chemical structure

Teneligliptin Impurity 24

CAS: 1654022-09-9
Formula: C₈H₁₂N₂O₂S
MW: 200.26 g/mol

VQ-042410

Reference Standard

Tenivastatin chemical structure

CAS: 121009-77-6
Formula: C₂₅H₄₀O₆
MW: 436.6 g/mol

VQ-033862

Reference Standard

Tenofovir 9-Propenyl Impurity chemical structure

Tenofovir 9-Propenyl Impurity

CAS: 4121-39-5
Formula: C₈H₉N₅
MW: 175.19 g/mol

VQ-028249

Reference Standard

Tenofovir Alafenamide chemical structure

Tenofovir Alafenamide

CAS: 379270-37-8
Formula: C₂₁H₂₉N₆O₅P
MW: 476.5 g/mol

VQ-028256

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