(pharmacology) A bisphosphonate C₄H₁₃NO₇P₂ used to inhibit bone resorption especially in the treatment of osteoporosis in postmenopausal women and Paget's disease of bone. Trade names include Fosamax and possibly others.

a natural acid, found in the plant genus Spiraea (spirea)

Malonic acid.

(organic chemistry) A dicarboxylic acid, HO₂C(CH₂)₅CO₂H, whose derivatives are involved in the biosynthesis of lysine.

(organic chemistry) 4-oxopentanoic acid, a keto acid used as a synthetic intermediate.

(obsolete, organic chemistry) acid of milk, lactic acid

Myristic acid.

Glycolic acid.

(organic chemistry) A compound, the first paramagnetic MRI contrast agent.

Glyoxylic acid.