1.Pharmaceutical Ingredient 2. Allopurinol 315-30-0 3. To treat hyperuricemia and its complications, including chronic gout. Product Name AllopurinolChemical Name 4-hydroxypyrazolo[3,4-d] pyrimidine Molecular Formula C5H4N4OMolecular Weight 136.1 Storage Store In a tightly sealed container away from heat and direct light, and in a cool dry place.

ITEMS	SPECIFICATION
Appearance	A white or almost white powder
Identification	Meets the requirements
Color and Clarity of Solution	Meets the requirements
Absorptivity	0.52 ~ 0.60
Loss on Drying	≤0.5%
Sulphated Ash	≤0.1%
Heavy Metals	≤20ppm
Related Substances	≤0.2%
Formamide	≤100ppm
Hydrazine	≤5ppm
Chromatographic	≤0.2%
3-Amino-4-carbcthoxypyrazol (TLC)	≤0.1%
Assay (HPLC)	98.0 ~ 102.0%

Pharmaceutical Ingredient, Allopurinol , 315-30-0