Catalog division

Impurity Reference Standards

Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.

20,060 products6 categories2,050 in stockCOA + SDS with every lot

20,060 products · page 717 of 836

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rac-Efavirenz

CAS: 177530-93-7
Formula: C₁₄H₉ClF₃NO₂
MW: 315.67 g/mol

ZX-021520

rac-Epinephrine-3-O-sulfate

CAS: 112346-91-5
Formula: C₉H₁₃NO₆S
MW: 263.27 g/mol

ZX-023160

rac-Epinephrine-3-O-sulfate sodium salt

CAS: 21093-14-1
Formula: C₉H₁₂NNaO₆S
MW: 285.25 g/mol

ZX-027907

rac-Epinephrine-d3

CAS: 1189977-29-4
Formula: C₉H₁₃NO₃
MW: 186.22 g/mol

ZX-032995

rac-erythro Methylphenidate Hydrochloride (1.0 mg/mL in Methanol)

CAS: 23644-60-2
Formula: C₁₄H₂₀ClNO₂
MW: 269.77 g/mol

ZX-036851

rac-Formoterol-d6

CAS: 1020719-45-2
Formula: C₁₉H₂₄N₂O₄
MW: 350.4 g/mol

ZX-043235

rac-Galanthamine Hydrobromide

CAS: 193146-85-9
Formula: C₁₇H₂₂BrNO₃
MW: 368.3 g/mol

ZX-029690

rac-Hesperetin 7-O-beta-D-Glucuronide

CAS: 1237479-09-2
Formula: C₂₂H₂₂O₁₂
MW: 478.4 g/mol

ZX-029017

Rac-Lamivudine EP Impurity B

CAS: 141434-39-1
Formula: C₈H₁₁N₃O₃S
MW: 229.26 g/mol

ZX-025276

rac-Milnacipran-d10 Hydrochloride

CAS: 1217774-40-7
Formula: C₁₅H₂₃ClN₂O
MW: 292.87 g/mol

ZX-043145

rac-Mirabegron

CAS: 1330277-46-7
Formula: C₂₁H₂₄N₄O₂S
MW: 396.5 g/mol

ZX-025650

rac-Mirabegron-d5

CAS: 1215807-38-7
Formula: C₂₁H₂₄N₄O₂S
MW: 401.5 g/mol

ZX-025645

Rac-Monepantel

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

ZX-044629

rac-N-Desethyl-N'-phthalimido Milnacipran

CAS: 105310-73-4
Formula: C₂₁H₂₀N₂O₃
MW: 348.4 g/mol

ZX-030628

rac-N-Methyl-Laudanosine Iodide

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

ZX-028127

rac-N-Nitroso Nornicotine

CAS: 80508-23-2
Formula: C₉H₁₁N₃O
MW: 177.2 g/mol

ZX-030839

Rac-Nebivolol

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

ZX-025763

rac-Nicotine-d4

CAS: 350818-69-8
Formula: C₁₀H₁₄N₂
MW: 166.26 g/mol

ZX-033920

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

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

ZX-024861

rac-Phenylephrine-d3 Hydrochloride

CAS: 2714485-34-2
Formula: C₉H₁₄ClNO₂
MW: 206.68 g/mol

ZX-036149

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-Rhododendrol

CAS: 69617-84-1
Formula: C₁₀H₁₄O₂
MW: 166.22 g/mol

ZX-034453

Rac-Rivaroxaban Diphthalimido Morpholinone Analog

CAS: 1642600-99-4
Formula: C₃₂H₃₀N₄O₈
MW: 598.6 g/mol

ZX-032255

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