Impurities
AY-0319-007
Allopurinol EP Impurity B
C5H6N4O2
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Impurity reference standard material
Allopurinol EP Impurity E
Material overview
Allopurinol EP Impurity E (AY-0319-006) — impurity reference standard material. CAS 31055-19-3, formula C7H9N3O3, molecular weight 183.16 g/mol. Request technical documentation and current availability.
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Technical identifiers
- Catalog number
- AY-0319-006
- CAS number
- 31055-19-3
- Molecular formula
- C7H9N3O3
- Molecular weight
- 183.16 g/mol
- Category
- Impurity reference standard material
- Chemical name
- ethyl 5-formamido-1H-pyrazole-4-carboxylate
- Synonyms
- Allopurinol Related Compound E; 5-Formylamino-1H-pyrazole-4-carboxylic acid Ethyl Ester; 3-Formamidopyrazole-4-carboxylic Acid Ethyl Ester; Ethyl 3-(Formylamino)-1H-pyrazole-4-carboxylate; Ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate
- SMILES
- CCOC(=O)C1=C(NN=C1)NC=O
- Appearance
- White Powder
- Light sensitive
- No
- Hygroscopic
- No
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Storage
Refrigerator
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AY-0319-005
Allopurinol EP Impurity D
C6H9N3O2
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Impurities
AY-0319-004
Allopurinol EP Impurity C
C6H6N6O
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Impurities
AY-0319-003
Allopurinol Related Compound A
C8H14N8O6S
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Impurities
AY-0319-002
Allopurinol EP Impurity A
C4H6N4O
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API
AY-0319-001
Allopurinol
C5H4N4O
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