subhead only; includes "chemical structure", "chemical composition", "chemical properties" or "chemical characterization"; includes "chemical composition" or "chemical content" of organs & tissues, organisms & plants; not for chemical analysis or determination ( = /analysis) nor chemical synthesis or manufacture ( = /chemical synthesis) nor chemical isolation or purification ( = /isolation & purification); see MeSH scope note in Introduction; indexing policy: Manual 19.8.15; DF: /chem or /CH
Scope Note
Used with chemicals, biological, and non-biological substances for their composition, structure, characterization, and properties; also used for the chemical composition or content of organs, tissue, tumors, body fluids, organisms, and plants. Excludes chemical analysis and determination of substances for which analysis is used; excludes synthesis for which chemical synthesis is used; excludes isolation and purification of substances for which isolation & purification is used.
Entry Version
CHEM
Abbreviation
CH
Entry Term(s)
chemical characterization
chemical composition
chemical content
chemical properties
chemical structure
Online Note
search policy: Online Manual; use main heading/CH or CH (SH) or SUBS APPLY CH
History Note
91; used with Category A2-16, C4 & D 1991; A2-16, B1, B3-6, C4 & D 1992 forward
Used with chemicals, biological, and non-biological substances for their composition, structure, characterization, and properties; also used for the chemical composition or content of organs, tissue, tumors, body fluids, organisms, and plants. Excludes chemical analysis and determination of substances for which analysis is used; excludes synthesis for which chemical synthesis is used; excludes isolation and purification of substances for which isolation & purification is used.
