coal tar derivative
21quinoline — 1. Benzopyridine; 1 benzazine; a volatile nitrogenous base obtained by the distillation of coal tar, bones, alkaloids, etc.; a basic structure of many dyes and drugs; also used as an antimalarial. SYN: chinoleine, leucoline.[b] 2. One of a …
22hydrocarbon — hydrocarbonaceous, adj. /huy dreuh kahr beuhn, huy dreuh kahr /, n. any of a class of compounds containing only hydrogen and carbon, as an alkane, methane, CH4, an alkene, ethylene, C2H4, an alkyne, acetylene, C2H2, or an aromatic compound,… …
23Quinoline — Quinoline …
24drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …
25Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… …
26Naphtha — Not to be confused with naphthalene, a solid benzene derivative which is the main ingredient in mothballs. Naphtha (  /ˈn …
27History of aspirin — The history of aspirin and the medical use of it and related substances stretches back to antiquity, though pure aspirin ( acetylsalicylic acid or ASA ) has only been manufactured and marketed since 1899. Medicines made from willow and other… …
28thiophene — /thuy euh feen /, n. Chem. a water insoluble, colorless liquid, C4H4S, resembling benzene, occurring in crude coal tar benzene: used chiefly as a solvent and in organic synthesis. Also, thiophen /thuy euh fen /. [1880 85; THIO + phene, word final …
29mesitylene — me·sit·y·lene mə sit əl .ēn n an oily hydrocarbon C9H12 that is found in coal tar and petroleum or made synthetically and is a powerful solvent * * * me·sit·y·lene (mə sitґə lēn) a triply methylated derivative of benzene occurring… …
30picoline — ˈpikəˌlēn, lə̇n noun ( s) Etymology: International Scientific Vocabulary pic (from Latin pic , pix pitch) + ol + ine more at pitch : any of three liquid pyridine bases CH3C5H4N that are monomethyl derivatives of pyridine, are found in coal tar,… …
