(chemistry) An acid derived from camphor.

(organic chemistry, medicine) A xanthonoid anticancer agent that induces apoptosis

(chemistry) An acid obtained from gallic acid as a brown or red crystalline substance, related to rufiopin and anthracene.

(organic chemistry) A xanthonoid, isolated from gamboge resin, that has some anticancer activity

(organic chemistry) An isomer of gambogic acid, found in mangosteens, that is an anticancer agent.

(chemistry) hydrogen telluride in solution

(chemistry) An acid isomeric with sulphocyanic acid.

(organic chemistry) The compound (3R,4S,5R)-5-amino-3,4-dihydroxycyclohex-1-enecarboxylic acid which is used in the synthesis of neuraminidase inhibitors, and is involved in the biosynthesis of ansamycins and mitomycins

(organic chemistry) An acid which occurs in opium and may be obtained by oxidizing narcotine.

(archaic, organic chemistry) An acid obtained when spermaceti, saponified by means of potash, is decomposed by an acid.