Xanthine
If you find any inaccurate information, please let us know by providing your feedback here
This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C5H4N4O2 152.11 CAS RN®: 69-89-6.—White, crystalline powder. Decomposes on heating. Slightly soluble in water and in alcohol; soluble in sodium hydroxide TS; sparingly soluble in diluted hydrochloric acid. When subjected to the murexide reaction, a purple color is produced with the ammonia, but on the subsequent addition of fixed alkali hydroxides, the color is not discharged but is changed to violet.
Residue on Ignition (Reagent test): negligible, from 100 mg.
Loss on Drying 〈731〉: Dry it at 105° for 2 hours: it loses not more than 1% of its weight.
