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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(R)-(+)-1-(4-Methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline

CAS: 30356-08-2
Formula: C₁₇H₂₃NO
MW: 257.37 g/mol

ZX-028954

(R)-(+)-2-(Diphenylmethyl)pyrrolidine

CAS: 22348-31-8
Formula: C₁₇H₁₉N
MW: 237.34 g/mol

ZX-045449

(R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxaldehyde

CAS: 15186-48-8
Formula: C₆H₁₀O₃
MW: 130.14 g/mol

ZX-029715

(R)-(+)-Menthofuran

CAS: 17957-94-7
Formula: C₁₀H₁₄O
MW: 150.22 g/mol

ZX-031090

(R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methyl 4-methylbenzenesulfonate

CAS: 23788-74-1
Formula: C₁₃H₁₈O₅S
MW: 286.35 g/mol

ZX-035212

(R)-(3-(4-(6-(2H-Tetrazol-5-yl)pyridin-3-yl)-3-fluorophenyl)-2-oxooxazolidin-5-yl)methyl dihydrogen phosphate

CAS: 1239662-47-5
Formula: C₁₆H₁₄FN₆O₆P
MW: 436.29 g/mol

ZX-022865

(R)-(4-(1-(2-Cyano-1-cyclopentylethyl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl Pivalate

CAS: 1146629-80-2
Formula: C₂₃H₂₈N₆O₂
MW: 420.5 g/mol

ZX-032351

(R)-(7-Methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone

CAS: 1030377-32-2
Formula: C₁₆H₂₁N₅O
MW: 299.37 g/mol

ZX-027055

(R)-1-(1-([1,1'-Biphenyl]-4-yl)-3-chloropropan-2-yl)pyrrolidine-2,5-dione

CAS: 1573000-36-8
Formula: C₁₉H₁₈ClNO₂
MW: 327.8 g/mol

ZX-032357

(R)-1-(1-Hydroxy-3-phenylpropan-2-yl)urea

CAS: 275378-91-1
Formula: C₁₀H₁₄N₂O₂
MW: 194.23 g/mol

ZX-022802

(R)-1-(2-Chlorophenyl)-2-(1H-tetrazol-1-yl)ethyl carbamate

CAS: 913089-08-4
Formula: C₁₀H₁₀ClN₅O₂
MW: 267.67 g/mol

ZX-023880

(R)-1-(2-Chlorophenyl)-2-(2H-tetrazol-2-yl)ethan-1-ol

CAS: 1259059-77-2
Formula: C₉H₉ClN₄O
MW: 224.65 g/mol

ZX-021162

(R)-1-(2,4-Dichlorophenyl)-2-(2H-tetrazol-2-yl)ethyl carbamate

CAS: 913088-92-3
Formula: C₁₀H₉Cl₂N₅O₂
MW: 302.11 g/mol

ZX-023882

(R)-1-(3,4-Dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl)-N-methylmethanamine

CAS: 1132667-04-9
Formula: C₁₂H₁₇NO₂
MW: 207.27 g/mol

ZX-030058

(R)-1-(4-Fluorophenyl)-5-(2-oxo-4-phenyloxazolidin-3-yl)pentane-1,5-dione

CAS: 404874-93-7
Formula: C₂₀H₁₈FNO₄
MW: 355.4 g/mol

ZX-029423

(R)-1-(4-Phenyl-1H-imidazol-2-yl)ethanamine

CAS: 335246-81-6
Formula: C₁₁H₁₃N₃
MW: 187.24 g/mol

ZX-024483

(R)-1-(7,8-Dihydronaphthalen-1-yl)ethanamine

CAS: 802918-45-2
Formula: C₁₂H₁₅N
MW: 173.25 g/mol

ZX-028629

(R)-1-(Naphthalen-2-yl)ethanamine

CAS: 3906-16-9
Formula: C₁₂H₁₃N
MW: 171.24 g/mol

ZX-034141

(R)-1-[(4-Chlorophenyl)phenylmethyl]piperazine

CAS: 300543-56-0
Formula: C₁₇H₁₉ClN₂
MW: 286.8 g/mol

ZX-025365

(R)-1-Amino-2,3-dihydro-1H-indene-4-carbonitrile Hydrochloride

CAS: 1306763-29-0
Formula: C₁₀H₁₁ClN₂
MW: 194.66 g/mol

ZX-042305

(R)-1-Amino-2,3-dihydro-1H-indene-5-carbonitrile Hydrochloride

CAS: 903556-00-3
Formula: C₁₀H₁₁ClN₂
MW: 194.66 g/mol

ZX-046056

(R)-1-Aminoindane

CAS: 10277-74-4
Formula: C₉H₁₁N
MW: 133.19 g/mol

ZX-026669

(R)-1-Benzylpiperidin-3-amine

CAS: 168466-84-0
Formula: C₁₂H₁₈N₂
MW: 190.28 g/mol

ZX-043870

(R)-1-Phenyl-1,2,3,4-tetrahydroisoquinoline

CAS: 180272-45-1
Formula: C₁₅H₁₅N
MW: 209.29 g/mol

ZX-026983

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