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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

Piperonyl Acetate chemical structure

Piperonyl Acetate

CAS: 326-61-4
Formula: C₁₀H₁₀O₄
MW: 194.18 g/mol

VQ-032330

Reference Standard

Piperonyl Alcohol chemical structure

Piperonyl Alcohol

CAS: 495-76-1
Formula: C₈H₈O₃
MW: 152.15 g/mol

VQ-032329

Reference Standard

Piperonyl chloride chemical structure

Piperonyl chloride

CAS: 20850-43-5
Formula: C₈H₇ClO₂
MW: 170.59 g/mol

VQ-032327

Reference Standard

Piperonylic Acid chemical structure

Piperonylic Acid

CAS: 94-53-1
Formula: C₈H₆O₄
MW: 166.13 g/mol

VQ-042275

Reference Standard

Pipotiazine Palmitate chemical structure

Pipotiazine Palmitate

CAS: 37517-26-3
Formula: C₄₀H₆₃N₃O₄S₂
MW: 714.1 g/mol

VQ-043542

Reference Standard

Piroxicam O-Isopropyl Impurity chemical structure

Piroxicam O-Isopropyl Impurity

CAS: 118854-49-2
Formula: C₁₈H₁₉N₃O₄S
MW: 373.4 g/mol

In stock

Reference Standard

Pirtobrutinib Impurity 3 chemical structure

Pirtobrutinib Impurity 3

CAS: 1453473-00-1
Formula: C₁₀H₁₁F₃N₂O
MW: 232.2 g/mol

VQ-041526

Reference Standard

Pirtobrutinib Impurity 8 Hydrochloride chemical structure

Pirtobrutinib Impurity 8 Hydrochloride

CAS: 2940876-23-1
Formula: C₃H₈ClF₃N₂
MW: 164.56 g/mol

VQ-041525

Reference Standard

Pitavastatin (+)-Phenylethylamine Salt chemical structure

Pitavastatin (+)-Phenylethylamine Salt

CAS: 147511-70-4
Formula: C₃₃H₃₅FN₂O₄
MW: 542.6 g/mol

VQ-027530

Reference Standard

Pitavastatin (3S,5S)-Isomer chemical structure

Pitavastatin (3S,5S)-Isomer

CAS: 688735-41-3
Formula: C₂₅H₂₄FNO₄
MW: 421.5 g/mol

VQ-041531

Reference Standard

Pitavastatin 3-Oxo Ethyl Ester chemical structure

Pitavastatin 3-Oxo Ethyl Ester

CAS: 148901-69-3
Formula: C₂₇H₂₆FNO₄
MW: 447.5 g/mol

VQ-043260

Reference Standard

Pitavastatin 5-Oxo Calcium chemical structure

Pitavastatin 5-Oxo Calcium

CAS: 2180095-22-9
Formula: C₅₀H₄₂CaF₂N₂O₈
MW: 876.9 g/mol

VQ-027527

Reference Standard

Pitavastatin 5-Oxo Impurity chemical structure

Pitavastatin 5-Oxo Impurity

CAS: 222306-15-2
Formula: C₂₅H₂₂FNO₄
MW: 419.4 g/mol

VQ-033223

Reference Standard

Pitavastatin Acetonide T-Butyl Ester chemical structure

Pitavastatin Acetonide T-Butyl Ester

CAS: 147489-06-3
Formula: C₃₂H₃₆FNO₄
MW: 517.6 g/mol

VQ-027533

Reference Standard

Pitavastatin Desfluoro Aldehyde chemical structure

Pitavastatin Desfluoro Aldehyde

CAS: 2153433-59-9
Formula: C₁₉H₁₅NO
MW: 273.3 g/mol

VQ-041532

Reference Standard

Pitavastatin Desfluoro Impurity chemical structure

Pitavastatin Desfluoro Impurity

CAS: 847849-67-6
Formula: C₂₅H₂₅NO₄
MW: 403.5 g/mol

VQ-043261

Reference Standard

Pitavastatin Desfluoro Impurity Calcium chemical structure

Pitavastatin Desfluoro Impurity Calcium

CAS: 1258947-30-6
Formula: C₅₀H₄₈CaN₂O₈
MW: 845 g/mol

VQ-027531

Reference Standard

Pitavastatin Dihydrobenzophenanthridine Impurity chemical structure

Pitavastatin Dihydrobenzophenanthridine Impurity

CAS: 1187966-91-1
Formula: C₂₅H₂₄FNO₄
MW: 421.5 g/mol

VQ-033228

Reference Standard

Pitavastatin Ethyl Ester chemical structure

Pitavastatin Ethyl Ester

CAS: 167073-19-0
Formula: C₂₇H₂₈FNO₄
MW: 449.5 g/mol

VQ-041533

Reference Standard

Pitavastatin Hydroxymethyl Impurity chemical structure

Pitavastatin Hydroxymethyl Impurity

CAS: 121660-11-5
Formula: C₁₉H₁₆FNO
MW: 293.3 g/mol

VQ-033225

Reference Standard

Pitavastatin Impurity 39 chemical structure

Pitavastatin Impurity 39

CAS: 154170-27-1
Formula: C₃₂H₃₆FNO₄
MW: 517.6 g/mol

VQ-041535

Reference Standard

Pitavastatin Impurity 9 chemical structure

Pitavastatin Impurity 9

CAS: 176593-07-0
Formula: C₃₅H₃₉FN₂O₄
MW: 570.7 g/mol

VQ-045344

Reference Standard

Pitavastatin Methyl Ester chemical structure

Pitavastatin Methyl Ester

CAS: 849811-78-5
Formula: C₂₆H₂₆FNO₄
MW: 435.5 g/mol

VQ-027526

Reference Standard

Pitavastatin Phenylethylamine adduct

Pitavastatin Phenylethylamine adduct

CAS: 1456783-35-9
Formula: C₃₃H₃₃FN₂O₃
MW: 524.63 g/mol

VQ-027540

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