-idine

noun suffix

see -idin

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a suffix added to the name of one chemical compound to form the name of another compound derived from or related to the first.

[-IDE + -INE²]

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-idine, suffix Chem.

[f. -ide + -ine⁵.]

Used to form the names of many organic compounds containing nitrogen which, with few exceptions (as guanidine), contain one or more rings; exp.: a. Certain amino derivatives (a) of simple monocyclic aromatic hydrocarbons, as cumidine, cymidine, mesidine, toluidine, xylidine, or of derivatives of such hydrocarbons, as cresidine; (b) of symmetrical bicyclic aromatic hydrocarbons, as benzidine, naphthidine, tolidine. b. Certain aminophenol ethers, as anisidine, phenetidine. c. Certain heterocyclic compounds with nitrogen in the ring (the use of the suffix in some cases implying that the ring is saturated), as piperidine, pteridine, pyridine, pyrrolidine. (Hence, in mod. systematic nomenclature, forming the suffixes -iridine, -etidine and -olidine, as in aziridine.) d. Pyrimidine nucleosides, as cytidine, thymidine, uridine. e. Certain alkaloids, as anhalidine, pilocarpidine, quinidine.