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Impurities & Reference Standards

Metabolites & Degradation Products

Source 200 metabolites & degradation products for research, QC and production, documented with COA and SDS.

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COA + SDSwith every lot

Reference Standard

Palbociclib Pyridine N-Oxide Impurity chemical structure

Palbociclib Pyridine N-Oxide Impurity

CAS: 2098673-40-4
Formula: C₂₄H₂₉N₇O₃
MW: 463.5 g/mol

In stock

Reference Standard

Paliperidone hydroxy benzoyl analog chemical structure

Paliperidone hydroxy benzoyl analog

CAS: 152542-03-5
Formula: C₂₃H₂₈FN₃O₄
MW: 429.5 g/mol

VQ-021303

Reference Standard

Paliperidone Impurity J chemical structure

Paliperidone Impurity J

CAS: 2379324-96-4
Formula: C₃₅H₃₉F₂N₅O₄
MW: 631.7 g/mol

VQ-043822

Reference Standard

Paliperidone N-Oxide chemical structure

Paliperidone N-Oxide

CAS: 761460-08-6
Formula: C₂₃H₂₇FN₄O₄
MW: 442.5 g/mol

VQ-027369

Reference Standard

Paliperidone Palmitate N-Oxide chemical structure

Paliperidone Palmitate N-Oxide

CAS: 1404053-60-6
Formula: C₃₉H₅₇FN₄O₅
MW: 680.9 g/mol

VQ-027371

Reference Standard

Pantoprazole N-oxide chemical structure

Pantoprazole N-oxide

CAS: 953787-60-5
Formula: C₁₆H₁₅F₂N₃O₅S
MW: 399.4 g/mol

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Reference Standard

Pantoprazole Sulfide N-Oxide chemical structure

Pantoprazole Sulfide N-Oxide

CAS: 953787-51-4
Formula: C₁₆H₁₅F₂N₃O₄S
MW: 383.4 g/mol

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Reference Standard

Pantoprazole Sulfone N-Oxide chemical structure

Pantoprazole Sulfone N-Oxide

CAS: 953787-55-8
Formula: C₁₆H₁₅F₂N₃O₆S
MW: 415.4 g/mol

VQ-027382

Reference Standard

Para Hydroxy Doxycycline Impurity

Para Hydroxy Doxycycline Impurity

CAS: 4497-11-4
Formula: C₂₂H₂₄N₂O₉
MW: 460.43 g/mol

VQ-036822

Reference Standard

para-Hydroxy Atorvastatin (Ca Salt) chemical structure

para-Hydroxy Atorvastatin (Ca Salt)

CAS: 265989-44-4
Formula: C₆₆H₆₈CaF₂N₄O₁₂
MW: 1187.3 g/mol

VQ-035225

Reference Standard

Paracetamol Impurity 4

Paracetamol Impurity 4

CAS: 500579-42-0
Formula: C₁₅H₁₅NO₂
MW: 241.29 g/mol

VQ-041334

Reference Standard

Parallel Dimer-Octreotide (USP)

Parallel Dimer-Octreotide (USP)

CAS: 1926163-80-5
Formula: C₉₈H₁₃₂N₂₀O₂₀S₄
MW: 2038 g/mol

VQ-044724

Reference Standard

Paricalcitol IMP13 chemical structure

Paricalcitol IMP13

CAS: 1023889-30-6
Formula: C₂₉H₄₆O₄
MW: 458.7 g/mol

VQ-041341

Reference Standard

Paroxetine 3-Hydroxy Metabolite chemical structure

Paroxetine 3-Hydroxy Metabolite

CAS: 112058-89-6
Formula: C₁₉H₂₂FNO₃
MW: 331.4 g/mol

VQ-041357

Reference Standard

Paroxetine 4-Hydroxy Metabolite chemical structure

Paroxetine 4-Hydroxy Metabolite

CAS: 112058-90-9
Formula: C₁₉H₂₂FNO₃
MW: 331.4 g/mol

VQ-041358

Reference Standard

Pazopanib metabolite M24 chemical structure

Pazopanib metabolite M24

CAS: 1414375-49-7
Formula: C₂₁H₂₃N₇O₃S
MW: 453.5 g/mol

VQ-041365

Reference Standard

Pazopanib metabolite M27 chemical structure

Pazopanib metabolite M27

CAS: 1252927-47-1
Formula: C₂₀H₂₁N₇O₂S
MW: 423.5 g/mol

VQ-033082

Reference Standard

PBC-5A AZA N-Oxide Des Boc Impurity

PBC-5A AZA N-Oxide Des Boc Impurity

Formula: C₁₈H₂₄N₈O.ClH
MW: 404.9 g/mol

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Reference Standard

PBC-5A AZA N-Oxide Des Boc Impurity Stage-1 chemical structure

PBC-5A AZA N-Oxide Des Boc Impurity Stage-1

CAS: 571189-16-7
Formula: C₁₄H₂₀N₄O₄
MW: 308.33 g/mol

In stock

Reference Standard

PBC-5A AZA N-Oxide Des Boc Impurity(N-1)

PBC-5A AZA N-Oxide Des Boc Impurity(N-1)

Formula: C₂₈H₄₀N₈O₅
MW: 568.67 g/mol

In stock

Reference Standard

PBT Impurity 1 chemical structure

CAS: 210566-87-3
Formula: C₂₄H₂₆O₉
MW: 458.5 g/mol

VQ-035375

Reference Standard

Pemetrexed Acid N-Hydroxysuccinimide Ester chemical structure

Pemetrexed Acid N-Hydroxysuccinimide Ester

CAS: 204257-65-8
Formula: C₁₉H₁₇N₅O₅
MW: 395.4 g/mol

VQ-041379

Reference Standard

Pemetrexed Alpha-hydroxy lactum chemical structure

Pemetrexed Alpha-hydroxy lactum

CAS: 1644286-36-1
Formula: C₂₀H₂₁N₅O₈
MW: 459.4 g/mol

VQ-033089

Reference Standard

Pentaerythritol 3,5-di-tert-butyl-4-hydroxyhydrocinnamate chemical structure

Pentaerythritol 3,5-di-tert-butyl-4-hydroxyhydrocinnamate

CAS: 26347-98-8
Formula: C₂₂H₃₆O₆
MW: 396.5 g/mol

VQ-027668

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