22407-20-1

Allopurinol EP Imp B Allopurinol Impurity1578 Allopurinol EP IMpurity B Allopurinol impurity B CRS Allopurinol Related CoMpound B 3-ForMaMidopyrazole-4-carboxaMide Allopurinol impurity B (A0350020) Allopurinol USP Related Compound B Allopurinol EP Impurity B (USP RC B) 5-forMaMido-1H-pyrazole-4-carboxaMide 3-(ForMylaMino)-1H-pyrazole-4-carboxaMide 5-(forMylaMino)-1H-pyrazole-4-carboxaMide 1H-Pyrazole-4-carboxamide, 3-(formylamino)- Allopurinol EP impurity B/ Allopurinol Related Compound B Allopurinol EP Impurity B（Allopurinol USP Related Compound B） Allopurinol EP Impurity B or Allopurinol USP Related Compound B Allopurinol Related Compound B (25 mg) (5-(formylamino)-1H-pyrazole-4-carboxamide) 3-(Formylamino)-1H-pyrazole-4-carboxamide 5-(Formylamino)-1H-pyrazole-4-carboxamide Allopurinol Related Compound B (5-(formylamino)-1H-pyrazole-4-carboxamide) (1013013) Allopurinol Impurity 2(Allopurinol EP Impurity B)(Allopurinol USP Related Compound B ) Allopurinol EP Impurity B -Formate saltQ: What is Allopurinol EP Impurity B -Formate salt Q: What is the CAS Number of Allopurinol EP Impurity B -Formate salt