Impurity Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

Named EP, USP and BP impurities and related compounds for pharmacopoeial methods, system suitability and peak identification.

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Trifluridine EP Impurity C

CAS: 23945-44-0
Formula: C₅H₄N₂O₄
MW: 156.1 g/mol

ZX-027413

Triflusal EP Impurity B

CAS: 328-90-5
Formula: C₈H₅F₃O₃
MW: 206.12 g/mol

ZX-032942

Trihexyphenidyl EP Impurity A

CAS: 886-06-6
Formula: C₁₄H₂₀ClNO
MW: 253.77 g/mol

ZX-022952

Trihexyphenidyl EP Impurity A (Free Base)

CAS: 73-63-2
Formula: C₁₄H₁₉NO
MW: 217.31 g/mol

ZX-036564

Trimebutine EP Impurity A

CAS: 39068-94-5
Formula: C₁₂H₁₉NO
MW: 193.28 g/mol

ZX-006043

Trimebutine EP Impurity D

CAS: 92414-09-0
Formula: C₂₂H₂₉NO₅
MW: 387.5 g/mol

ZX-027418

Trimetazidine EP Impurity A

CAS: 52146-35-7
Formula: C₁₄H₂₂N₂O₃
MW: 266.34 g/mol

ZX-027419

Trimetazidine EP Impurity A Dihydrochloride

CAS: 107049-57-0
Formula: C₁₄H₂₄Cl₂N₂O₃
MW: 339.3 g/mol

ZX-032708

Trimetazidine EP Impurity B

CAS: 1257-19-8
Formula: C₂₄H₃₄N₂O₆
MW: 446.5 g/mol

ZX-027420

Trimetazidine EP Impurity D

CAS: 71989-96-3
Formula: C₁₀H₁₄O₄
MW: 198.22 g/mol

ZX-027421

Trimetazidine EP Impurity E

CAS: 2518359-32-3
Formula: C₁₄H₂₄Cl₂N₂O₃
MW: 339.3 g/mol

ZX-027424

Trimetazidine EP Impurity F

CAS: 754147-91-6
Formula: C₁₄H₂₂N₂O₃
MW: 266.34 g/mol

ZX-006044

Trimetazidine EP Impurity F (Dihydrochloride Salt)

CAS: 113698-83-2
Formula: C₁₄H₂₂N₂O₃
MW: 266.34 g/mol

ZX-006045

Trimetazidine EP Impurity H

CAS: 53531-01-4
Formula: C₁₇H₂₆N₂O₅
MW: 338.4 g/mol

ZX-032707

Trimetazidine EP Impurity I

CAS: 93152-26-2
Formula: C₁₅H₂₄N₂O₃
MW: 280.36 g/mol

ZX-006046

Trimetazidine EP Impurity I (Dihydrochloride Salt)

CAS: 53960-20-6
Formula: C₁₅H₂₄N₂O₃
MW: 280.36 g/mol

ZX-006047

Trimethoprim EP Impurity A

CAS: 213745-86-9
Formula: C₁₅H₂₀N₄O₃
MW: 304.34 g/mol

ZX-027427

Trimethoprim EP Impurity B

CAS: 30806-86-1
Formula: C₁₄H₁₆N₄O₄
MW: 304.3 g/mol

ZX-027431

Trimethoprim EP Impurity C

CAS: 29606-06-2
Formula: C₁₄H₁₈N₄O₄
MW: 306.32 g/mol

ZX-027430

Trimethoprim EP Impurity D

CAS: 92440-76-1
Formula: C₁₄H₁₇N₃O₄
MW: 291.3 g/mol

ZX-027428

Trimethoprim EP Impurity E

CAS: 60729-91-1
Formula: C₁₄H₁₇N₃O₄
MW: 291.3 g/mol

ZX-032709

Trimethoprim EP Impurity F

CAS: 16285-82-8
Formula: C₁₃H₁₅BrN₄O₂
MW: 339.19 g/mol

ZX-022954

Trimethoprim EP Impurity G

CAS: 78025-68-0
Formula: C₁₅H₂₀N₄O₃
MW: 304.34 g/mol

ZX-027429

Trimethoprim EP Impurity H

CAS: 1916-07-0
Formula: C₁₁H₁₄O₅
MW: 226.23 g/mol

ZX-020410

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