Impurity Reference Standards

API Impurities

Process impurities, isomers, degradants and related compounds for thousands of APIs, characterised for method development, validation and QC release.

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Rac-Monepantel

CAS: 851976-50-6
Formula: C₂₀H₁₃F₆N₃O₂S
MW: 473.4 g/mol

ZX-044629

rac-N-Methyl-Laudanosine Iodide

CAS: 24948-17-2
Formula: C₂₂H₃₀INO₄
MW: 499.4 g/mol

ZX-028127

Rac-Nebivolol

CAS: 99200-09-6
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

ZX-025763

rac-O-Benzyl N-Benzyl Formoterol (Mixture of Diastereomers)

CAS: 43229-70-5
Formula: C₃₃H₃₆N₂O₄
MW: 524.6 g/mol

ZX-024861

rac-Praziquanamine

CAS: 61196-37-0
Formula: C₁₂H₁₄N₂O
MW: 202.25 g/mol

ZX-022556

rac-Pregabalin

CAS: 128013-69-4
Formula: C₈H₁₇NO₂
MW: 159.23 g/mol

ZX-026519

Rac-Rosuvastatin tert-butyl ester

CAS: 1005003-79-1
Formula: C₂₆H₃₆FN₃O₆S
MW: 537.6 g/mol

ZX-032311

Rac-Silodosin

CAS: 160970-64-9
Formula: C₂₅H₃₂F₃N₃O₄
MW: 495.5 g/mol

ZX-026931

rac-Sitagliptin

CAS: 823817-56-7
Formula: C₁₆H₁₅F₆N₅O
MW: 407.31 g/mol

ZX-032507

rac-trans-4-Defluoro-4-ethoxy Paroxetine Hydrochloride

CAS: 1346597-97-4
Formula: C₂₁H₂₆ClNO₄
MW: 391.9 g/mol

ZX-026313

rac,cis-Milnacipran Hydrochloride

CAS: 165259-91-6
Formula: C₁₆H₂₅ClN₂O
MW: 296.83 g/mol

ZX-025627

Racemate Methyldopa

CAS: 55-40-3
Formula: C₁₀H₁₃NO₄
MW: 211.21 g/mol

ZX-033847

Racemic Dapoxetine

CAS: 119356-76-2
Formula: C₂₁H₂₃NO
MW: 305.4 g/mol

ZX-028832

Racemic Ropivacaine

CAS: 98626-61-0
Formula: C₁₇H₂₆N₂O
MW: 274.4 g/mol

ZX-042459

Racemic Tranexamic Acid

CAS: 701-54-2
Formula: C₈H₁₅NO₂
MW: 157.21 g/mol

ZX-042615

Racemic-Sertraline Hydrochloride

CAS: 79617-89-3
Formula: C₁₇H₁₈Cl₃N
MW: 342.7 g/mol

ZX-032451

Ralfinamide

CAS: 133865-88-0
Formula: C₁₇H₁₉FN₂O₂
MW: 302.34 g/mol

ZX-026630

Ralfinamide Mesylate

CAS: 202825-45-4
Formula: C₁₈H₂₃FN₂O₅S
MW: 398.5 g/mol

ZX-042421

Raloxifene 6-Monomethyl Ether

CAS: 178451-13-3
Formula: C₂₉H₂₉NO₄S
MW: 487.6 g/mol

ZX-026632

Raloxifene Benzoic Acid Impurity Hydrochloride

CAS: 84449-80-9
Formula: C₁₄H₂₀ClNO₃
MW: 285.76 g/mol

ZX-022623

Raloxifene Dimer Impurity

CAS: 618902-12-8
Formula: C₅₆H₅₂N₂O₈S₂
MW: 945.2 g/mol

ZX-005222

Raloxifene Dimethoxy Impurity

CAS: 84541-38-8
Formula: C₃₀H₃₁NO₄S
MW: 501.6 g/mol

ZX-022622

Raloxifene Impurity 3

CAS: 84449-65-0
Formula: C₁₆H₁₄O₆S₃
MW: 398.5 g/mol

ZX-005223

Raloxifene Impurity 30

CAS: 89407-97-6
Formula: C₁₅H₂₁NO₃
MW: 263.33 g/mol

ZX-005224

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