CH, CHCOOH

occurring in tryptic ΄ς Ζ' ΝΗ digestion. pyroligneous a., a clear liquid obtained by the distillation of wood: its acid constituent is mainly acetic acid. _ pyrophosphoric a.,a crystalline acid, H,P. its salts are pyrophosphates. ne eoepcatnie a a., a colorle liquid, ketonic add, CH;,CO.CO,H, with an odor like acetic acid, formed by the dry {list illation of racemic or tartaric acid: called also pyruvic a. pyrosulphuric a., an acid, H,SO,SO;, a compound of sulphuric and sulphurous acids. pyro- ς @., a crystalline acid, C;H,O,, formed by heating tartaric acid. pyruvic a. See pyro racemic a. Quercitannic a., the tannic acid of oak bark, C,-H,O,, differing in its properties slightly from ordinary tannic acid. quillaic a., an acid from commercial saponin. It is said to be Reisonous when injected hypodermically. quinaldinic a., a crystalline acid, CsH_N(CO,H). quinic a., a crystalline acid, C;H,,0,, from cinquininic a., a crystalline acid, CoH,- (Ο. (ΞΗ,)Ν((Ο,Η), formed iby oxidizing quinin and quinidin. quino a variety of tannic acid from cinchona bark. “quinovie @., a crystalline substance from cinchona: it is feebly tonic. racemic a., a combination of dextro tartaric and levo tartaric acids. It is optically inactive. ratan hi a tannic a., the tannic acid of ratany. Called also krameric a. Yrheic a. Sce chrysophenic a. rheotannic a., the tannic acid of rhubarb, C..H,,0,, rheumic a., an acid, rere derivable from rheotannic acid. rho a@., a yellow, crystalline acid, C,H,S,- ON. “riciholeic ἃ., a fatty acid, C\H30;, from castor oil: purgative. rosacic 8., purpurin. ic a., the compound, CoH,,03, used as a histologic dye and as a test for acids. rufia., a brownish, crystalline acid, C,,H,O, + 2H,0, derived from anthracene. rutic a. Ν a fatty acid, Croll:: whose salts are called rutates. sabinenic a@., an acid, CyH,,0;, derivable from sabinene by oxidation. saccharic a. A dibasic acid, C,H,.O,;, formed by the action of nitric acid on carbohydrates. 2. A monobasic acid, C4H,,O., or tetra oxy caproic acid, not existing in the free state. saccharonic -, an acid, C,H,9O,. formed by oxidizing saccharin aAciD silicic acid, H,SiO,; metasilicic acid, H,SiO; and para silicic acid, H,SiQ,. 2. Le correctly, silica, SiO., or silicic an hydrid. _ silicotungstic