Impurities

Allopurinol Impurities

  • Allopurinol Related Compound B

  • Impurity: Allopurinol Related Compound B
  • Chemical Name: 5-(formylamino)-1H-pyrazole-4-carboxamide
  • Allopurinol Related Compound C

  • Impurity: Allopurinol Related Compound C
  • Chemical Name: 5-(4H-1,2,4-triazol-4-yl)-1H-pyrazole-4-carboxamide
  • Allopurinol Related Compound D

  • Impurity: Allopurinol Related Compound D
  • Chemical Name: ethyl 5-amino-1H-pyrazole-4-carboxylate
  • Allopurinol Related Compound E

  • Impurity: Allopurinol Related Compound E
  • Chemical Name: ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate
  • Allopurinol Related Compound F

  • Impurity: Allopurinol Related Compound F
  • Chemical Name: (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate)

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  • CAS number
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