Name:Allantoinum
Chemical formula : C₄H₆N₄O₃
Molecular weight : 158.12
Structural formula:

Property: White crystalline powder, slightly soluble in water ,almost soluble in ethanol or aether, soluble in hot water and sodium hydroxide.
Acidity: 4.5-6.0
Loss On Drying: Not more than 0.5%
Reidue on ignition: Not more than 0.1%
Heavy metals: Not more than 20ppm
Specification:
A: Accord with China Pharmacopoeia 2000 edition.
B: Accord with Europe Pharmacopoeia IIII edition
Use: Promote the function of organizing cell hyperplasia , ulcer and wound to heal
Registered number of approval: National drug standard H20013411