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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

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D-Homo C Derivative of Betamethasone Sodium Phosphate

CAS: 1201919-11-0
Formula: C₂₂H₂₈FNa₂O₈P
MW: 516.4 g/mol

ZX-020850

D-Iditol

CAS: 25878-23-3
Formula: C₆H₁₄O₆
MW: 182.17 g/mol

ZX-025986

D-Isomer Melphalan Hydrochloride

CAS: 4213-32-5
Formula: C₁₃H₁₉Cl₃N₂O₂
MW: 341.7 g/mol

ZX-027786

D-Limonene (Orange Oil)

CAS: 8028-48-6
Formula: C₁₅H₂₂O
MW: 218.33 g/mol

ZX-034046

D-Neopterin

CAS: 2009-64-5
Formula: C₉H₁₁N₅O₄
MW: 253.22 g/mol

ZX-022249

D-Penicillamine

CAS: 52-67-5
Formula: C₅H₁₁NO₂S
MW: 149.21 g/mol

ZX-026340

D-Penicillamine Disulfide

CAS: 20902-45-8
Formula: C₁₀H₂₀N₂O₄S₂
MW: 296.4 g/mol

ZX-031770

D-Phenylalanyl-D-leucine

CAS: 123442-34-2
Formula: C₁₅H₂₂N₂O₃
MW: 278.35 g/mol

ZX-028988

D-Phenylglycinamide

CAS: 6485-67-2
Formula: C₈H₁₀N₂O
MW: 150.18 g/mol

ZX-023885

D-Pyroglutamic Acid

CAS: 4042-36-8
Formula: C₅H₇NO₃
MW: 129.11 g/mol

ZX-034134

D-Ser4-Triptorelin

CAS: 102992-39-2
Formula: C₆₆H₈₃F₃N₁₈O₁₅
MW: 1425.5 g/mol

ZX-027436

D-Serine Methyl Ester Hydrochloride

CAS: 5874-57-7
Formula: C₄H₁₀ClNO₃
MW: 155.58 g/mol

ZX-028765

D-Thioproline

CAS: 45521-09-3
Formula: C₄H₇NO₂S
MW: 133.17 g/mol

ZX-045855

D-threo-(-)-2-Amino-1-(4-nitrophenyl)-1,3-propanediol

CAS: 716-61-0
Formula: C₉H₁₂N₂O₄
MW: 212.2 g/mol

ZX-023902

D-Thyroxine

CAS: 51-49-0
Formula: C₁₅H₁₁I₄NO₄
MW: 776.87 g/mol

ZX-031160

D-Tryptophan Methyl Ester Hydrochloride

CAS: 14907-27-8
Formula: C₁₂H₁₅ClN₂O₂
MW: 254.71 g/mol

ZX-032596

D-Valganciclovir Hydrochloride

CAS: 1393911-57-3
Formula: C₁₄H₂₃ClN₆O₅
MW: 390.82 g/mol

ZX-022977

D-Valine Methyl Ester Hydrochloride

CAS: 7146-15-8
Formula: C₆H₁₄ClNO₂
MW: 167.63 g/mol

ZX-036590

D-Xylo-2-hexulosonic Acid Methyl Ester

CAS: 67776-07-2
Formula: C₇H₁₂O₇
MW: 208.17 g/mol

ZX-020306

D,L-Dropropizine N-Oxide

CAS: 152323-00-7
Formula: C₁₃H₂₀N₂O₃
MW: 252.31 g/mol

ZX-025373

D,L-N,N-Didesmethyl-O-desmethyl Venlafaxine

CAS: 149289-29-2
Formula: C₁₄H₂₁NO₂
MW: 235.32 g/mol

ZX-023008

D,L-O-Desmethyl Venlafaxine N-Oxide

CAS: 1021933-95-8
Formula: C₁₆H₂₅NO₃
MW: 279.37 g/mol

ZX-027541

Dabigatran

CAS: 211914-51-1
Formula: C₂₅H₂₅N₇O₃
MW: 471.5 g/mol

ZX-006479

Dabigatran -6-Amide Ester Impurity

CAS: 1807758-61-7
Formula: C₂₆H₃₂N₄O₅
MW: 480.6 g/mol

ZX-004547

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