Impurity Reference Standards

API Reference Standards

Characterised API working standards for assay, identification and routine QC testing, supplied with full analytical data packages.

3,188 products371 in stockCOA + SDS with every lot

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Nirmatrelvir

CAS: 2628280-40-8
Formula: C₂₃H₃₂F₃N₅O₄
MW: 499.5 g/mol

ZX-030870

Nirogacestat

CAS: 1290543-63-3
Formula: C₂₇H₄₁F₂N₅O
MW: 489.6 g/mol

ZX-006687

Nitenpyram

CAS: 150824-47-8
Formula: C₁₁H₁₅ClN₄O₂
MW: 270.71 g/mol

ZX-030878

Nitisinone

CAS: 104206-65-7
Formula: C₁₄H₁₀F₃NO₅
MW: 329.23 g/mol

ZX-030880

Nitrendipine

CAS: 39562-70-4
Formula: C₁₈H₂₀N₂O₆
MW: 360.4 g/mol

ZX-022293

Nitrofurantoin

CAS: 67-20-9
Formula: C₈H₆N₄O₅
MW: 238.16 g/mol

ZX-025858

Nitrofurantoin Monohydrate

CAS: 17140-81-7
Formula: C₈H₈N₄O₆
MW: 256.17 g/mol

ZX-030885

Nitroscanate

CAS: 19881-18-6
Formula: C₁₃H₈N₂O₃S
MW: 272.28 g/mol

ZX-031454

Nitroxinil

CAS: 1689-89-0
Formula: C₇H₃IN₂O₃
MW: 290.01 g/mol

ZX-030888

Nizatidine

CAS: 76963-41-2
Formula: C₁₂H₂₁N₅O₂S₂
MW: 331.5 g/mol

ZX-006688

Nomegestrol

CAS: 58691-88-6
Formula: C₂₁H₂₈O₃
MW: 328.4 g/mol

ZX-022296

Nomegestrol acetate

CAS: 58652-20-3
Formula: C₂₃H₃₀O₄
MW: 370.5 g/mol

ZX-022297

Nonoxynol 9

CAS: 14409-72-4
Formula: C₃₃H₆₀O₁₀
MW: 616.8 g/mol

ZX-035163

Nordazepem

CAS: 1088-11-5
Formula: C₁₅H₁₁ClN₂O
MW: 270.71 g/mol

ZX-006689

Nordihydro Guaiaretic Acid (mixture of diastereomers)

CAS: 500-38-9
Formula: C₁₈H₂₂O₄
MW: 302.4 g/mol

ZX-033950

Norethandrolone

CAS: 52-78-8
Formula: C₂₀H₃₀O₂
MW: 302.5 g/mol

ZX-044352

Norethindrone acetate

CAS: 51-98-9
Formula: C₂₂H₂₈O₃
MW: 340.5 g/mol

ZX-022301

Norethisterone Enanthate

CAS: 3836-23-5
Formula: C₂₇H₃₈O₃
MW: 410.6 g/mol

ZX-025877

Norfluoxetine Hydrochloride

CAS: 57226-68-3
Formula: C₁₆H₁₇ClF₃NO
MW: 331.76 g/mol

ZX-029569

Norfluoxetine Oxalate

CAS: 107674-50-0
Formula: C₁₈H₁₈F₃NO₅
MW: 385.3 g/mol

ZX-036656

Norgestimate

CAS: 35189-28-7
Formula: C₂₃H₃₁NO₃
MW: 369.5 g/mol

ZX-022324

Norgestrel

CAS: 6533-00-2
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

ZX-022326

Noribogaine Hydrochloride

CAS: 110514-35-7
Formula: C₁₉H₂₅ClN₂O
MW: 332.9 g/mol

ZX-046268

Nortriptyline Hydrochloride

CAS: 894-71-3
Formula: C₁₉H₂₂ClN
MW: 299.8 g/mol

ZX-022327

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