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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

Amlodipine Impurity I (Freebase) chemical structure

Amlodipine Impurity I (Freebase)

CAS: 2923811-73-6
Formula: C₂₀H₂₆ClN₃O₅
MW: 423.9 g/mol

VQ-004378

Reference Standard

Amlodipine Isopropyl Ethyl Ester Impurity chemical structure

Amlodipine Isopropyl Ethyl Ester Impurity

CAS: 158151-92-9
Formula: C₂₂H₂₉ClN₂O₅
MW: 436.9 g/mol

In stock

Reference Standard

Amlodipine Lactone Impurity chemical structure

Amlodipine Lactone Impurity

CAS: 100276-22-0
Formula: C₁₆H₁₄ClNO₄
MW: 319.74 g/mol

VQ-047391

Reference Standard

Amlodipine Maleic Acid Amide Impurity chemical structure

Amlodipine Maleic Acid Amide Impurity

CAS: 400602-36-0
Formula: C₂₄H₂₇ClN₂O₈
MW: 506.9 g/mol

VQ-029136

Reference Standard

Amlodipine morpholine impurity chemical structure

Amlodipine morpholine impurity

CAS: 2387405-44-7
Formula: C₂₁H₂₅ClN₂O₅
MW: 420.9 g/mol

VQ-024259

Reference Standard

Amlodipine N-Lactoside chemical structure

Amlodipine N-Lactoside

CAS: 749864-27-5
Formula: C₃₂H₄₅ClN₂O₁₅
MW: 733.2 g/mol

VQ-024253

Reference Standard

Amlodipine N-Lactoside (Mixture of Diastereomers) chemical structure

Amlodipine N-Lactoside (Mixture of Diastereomers)

CAS: 2173291-00-2
Formula: C₃₂H₄₅ClN₂O₁₅
MW: 733.2 g/mol

VQ-021560

Reference Standard

Amlodipine orotate chemical structure

Amlodipine orotate

CAS: 914941-70-1
Formula: C₂₅H₂₉ClN₄O₉
MW: 565 g/mol

VQ-035695

Reference Standard

Amlodipine para-Chloro Impurity chemical structure

Amlodipine para-Chloro Impurity

CAS: 90445-02-6
Formula: C₂₀H₂₅ClN₂O₅
MW: 408.9 g/mol

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Reference Standard

Amlodipine Related Compound (E-Isomer) chemical structure

Amlodipine Related Compound (E-Isomer)

CAS: 400024-08-0
Formula: C₂₃H₂₀ClNO₆
MW: 441.9 g/mol

VQ-004381

Reference Standard

Amlodipine Related Compound K chemical structure

Amlodipine Related Compound K

CAS: 1621516-91-3
Formula: C₁₈H₂₀ClNO₃
MW: 333.8 g/mol

VQ-021564

Reference Standard

Ammeline chemical structure

CAS: 645-92-1
Formula: C₃H₅N₅O
MW: 127.11 g/mol

VQ-032468

Reference Standard

Ammonio Methacrylate Copolymer Type A

Ammonio Methacrylate Copolymer Type A

CAS: 33434-24-1
Formula: C₁₉H₃₄ClNO₆
MW: 407.93 g/mol

VQ-043466

Reference Standard

Ammonium1-(6-methoxy-1H-benzo(d)imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylate chemical structure

Ammonium1-(6-methoxy-1H-benzo(d)imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylate

CAS: 2227107-89-1
Formula: C₁₆H₁₈N₄O₄
MW: 330.34 g/mol

VQ-037090

Reference Standard

Amodiaquine Impurity A (Mannich Base) chemical structure

Amodiaquine Impurity A (Mannich Base)

CAS: 121-78-8
Formula: C₁₃H₂₀N₂O₂
MW: 236.31 g/mol

In stock

Reference Standard

Amorphadiene chemical structure

CAS: 92692-39-2
Formula: C₁₅H₂₄
MW: 204.35 g/mol

VQ-035134

Reference Standard

Amoxapine Chlorophenoxyaniline Carbamate chemical structure

Amoxapine Chlorophenoxyaniline Carbamate

CAS: 31879-60-4
Formula: C₁₅H₁₄ClNO₃
MW: 291.73 g/mol

VQ-029140

Reference Standard

Amoxapine Chlorophenoxyaniline urea analog chemical structure

Amoxapine Chlorophenoxyaniline urea analog

CAS: 2514697-21-1
Formula: C₁₇H₁₈ClN₃O₂
MW: 331.8 g/mol

VQ-045281

Reference Standard

Amoxicilin Alpha Penicilloic Acid chemical structure

Amoxicilin Alpha Penicilloic Acid

CAS: 87860-49-9
Formula: C₁₆H₂₁N₃O₆S
MW: 383.4 g/mol

VQ-024278

Reference Standard

Amoxicillin (2R)-Piperazine-2,5-dione

Amoxicillin (2R)-Piperazine-2,5-dione

CAS: 210289-70-6
Formula: C₁₆H₁₉N₃O₅S
MW: 365.4 g/mol

VQ-024274

Reference Standard

Amoxicillin (2S)-Piperazine-2,5-dione chemical structure

Amoxicillin (2S)-Piperazine-2,5-dione

CAS: 210289-71-7
Formula: C₁₆H₁₉N₃O₅S
MW: 365.4 g/mol

VQ-029146

Reference Standard

Amoxicillin Related Compound E chemical structure

Amoxicillin Related Compound E

CAS: 178738-48-2
Formula: C₁₅H₂₁N₃O₄S
MW: 339.4 g/mol

VQ-029150

Reference Standard

Amoxicillin Trimer chemical structure

Amoxicillin Trimer

CAS: 174391-69-6
Formula: C₄₈H₅₇N₉O₁₅S₃
MW: 1096.2 g/mol

VQ-029149

Reference Standard

Amoxicillin Trimer Impurity chemical structure

Amoxicillin Trimer Impurity

CAS: 2088961-40-2
Formula: C₄₈H₅₇N₉O₁₅S₃
MW: 1096.2 g/mol

VQ-024271

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