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 179 of 836

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4-Hydrazino Benzene Sulfonamide Hydrochloride

CAS: 27918-19-0
Formula: C₆H₁₀ClN₃O₂S
MW: 223.68 g/mol

ZX-031142

4-Hydrazino-benzoic acid ethyl ester

CAS: 14685-90-6
Formula: C₉H₁₂N₂O₂
MW: 180.2 g/mol

ZX-039753

4-Hydrazinyl-1-methylazepane

CAS: 110406-95-6
Formula: C₇H₁₇N₃
MW: 143.23 g/mol

ZX-028176

4-Hydroxy Alverine

CAS: 142047-94-7
Formula: C₂₀H₂₇NO
MW: 297.4 g/mol

ZX-020421

4-Hydroxy Antipyrine

CAS: 1672-63-5
Formula: C₁₁H₁₂N₂O₂
MW: 204.22 g/mol

ZX-026036

4-Hydroxy Atorvastatin Disodium Salt

CAS: 1276537-18-8
Formula: C₃₃H₃₃FN₂Na₂O₆
MW: 618.6 g/mol

ZX-028105

4-Hydroxy Atorvastatin Hemicalcium Salt

CAS: 1263176-34-6
Formula: C₃₃H₃₄CaFN₂O₆⁺
MW: 613.7 g/mol

ZX-023402

4-Hydroxy Atorvastatin Lactone

CAS: 163217-70-7
Formula: C₃₃H₃₃FN₂O₅
MW: 556.6 g/mol

ZX-020703

4-Hydroxy Benzeneacetic Acid 2-(Dimethylamino)-2-oxoethyl Ester

CAS: 59721-16-3
Formula: C₁₂H₁₅NO₄
MW: 237.25 g/mol

ZX-036443

4-Hydroxy Benzothioamide

CAS: 25984-63-8
Formula: C₇H₇NOS
MW: 153.2 g/mol

ZX-031072

4-Hydroxy Carbazole

CAS: 54989-33-2
Formula: C₁₂H₉NO
MW: 183.21 g/mol

ZX-044524

4-Hydroxy Clonidine

CAS: 57101-48-1
Formula: C₉H₉Cl₂N₃O
MW: 246.09 g/mol

ZX-028685

4-Hydroxy Diclofenac

CAS: 64118-84-9
Formula: C₁₄H₁₁Cl₂NO₃
MW: 312.1 g/mol

ZX-020466

4-Hydroxy Duloxetine

CAS: 662149-13-5
Formula: C₁₈H₁₉NO₂S
MW: 313.4 g/mol

ZX-039077

4-Hydroxy Duloxetine β-D-Glucuronide

CAS: 741693-83-4
Formula: C₂₄H₂₇NO₈S
MW: 489.5 g/mol

ZX-029123

4-Hydroxy Estrone

CAS: 3131-23-5
Formula: C₁₈H₂₂O₃
MW: 286.4 g/mol

ZX-029347

4-Hydroxy Ketorolac

CAS: 111930-01-9
Formula: C₁₅H₁₃NO₄
MW: 271.27 g/mol

ZX-030123

4-Hydroxy Midazolam

CAS: 59468-85-8
Formula: C₁₈H₁₃ClFN₃O
MW: 341.8 g/mol

ZX-036833

4-Hydroxy Nebivolol

CAS: 178383-76-1
Formula: C₂₂H₂₈ClF₂NO₆
MW: 475.9 g/mol

ZX-030776

4-Hydroxy Nimesulide

CAS: 109032-22-6
Formula: C₁₃H₁₂N₂O₆S
MW: 324.31 g/mol

ZX-030857

4-Hydroxy Propranolol Glucuronide

CAS: 94731-13-2
Formula: C₂₂H₂₉NO₉
MW: 451.5 g/mol

ZX-032036

4-Hydroxy propranolol Hydrochloride

CAS: 14133-90-5
Formula: C₁₆H₂₂ClNO₃
MW: 311.8 g/mol

ZX-026579

4-Hydroxy Raloxifene

CAS: 185416-01-7
Formula: C₂₈H₂₇NO₄S
MW: 473.6 g/mol

ZX-022624

4-Hydroxy Triamterene Sulfate Sodium Salt

CAS: 73756-87-3
Formula: C₁₂H₁₀N₇NaO₄S
MW: 371.31 g/mol

ZX-036326

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