CHEBI:139358 - isotopically modified compound

Main

ChEBI Ontology

Automatic Xrefs

Reactions

Pathways

Models

ChEBI Name isotopically modified compound ChEBI ID CHEBI:139358 Definition Any molecular entity in which the isotopic ratio of nuclides for at least one element deviates measurably from that occurring in nature. The term includes both isotopically substituted compounds (in which essentially all the molecules of the compound have only the indicated nuclide(s) at each designated position) and isotopically labeled compounds (a formal mixture of an isotopically unmodified compound with one or more analogous isotopically substituted compound(s). Stars This entity has been manually annotated by the ChEBI Team. ChEBI Ontology Outgoing isotopically modified compound (CHEBI:139358) is a molecular entity (CHEBI:23367) Incoming (18O)water (CHEBI:33813) is a isotopically modified compound (CHEBI:139358) (201Tl)thallium monochloride (CHEBI:32213) is a isotopically modified compound (CHEBI:139358) 11C-modified compound (CHEBI:139544) is a isotopically modified compound (CHEBI:139358) 13C-modified compound (CHEBI:139357) is a isotopically modified compound (CHEBI:139358) 13N-modified compound (CHEBI:145113) is a isotopically modified compound (CHEBI:139358) 14C-modified compound (CHEBI:139542) is a isotopically modified compound (CHEBI:139358) 15N-modified compound (CHEBI:139360) is a isotopically modified compound (CHEBI:139358) 18F radiopharmaceutical (CHEBI:49127) is a isotopically modified compound (CHEBI:139358) 223RaCl2 (CHEBI:74895) is a isotopically modified compound (CHEBI:139358) chlormerodrin (197Hg) (CHEBI:59455) is a isotopically modified compound (CHEBI:139358) chlormerodrin (203Hg) (CHEBI:59462) is a isotopically modified compound (CHEBI:139358) deuterated compound (CHEBI:76107) is a isotopically modified compound (CHEBI:139358) sodium 2-(125I)iodohippurate (CHEBI:134739) is a isotopically modified compound (CHEBI:139358) sodium 2-(131I)iodohippurate (CHEBI:134740) is a isotopically modified compound (CHEBI:139358) tritiated compound (CHEBI:139359) is a isotopically modified compound (CHEBI:139358) Synonym Source isotopically modified compounds ChEBI Last Modified 16 October 2019

General Comments 2018-01-04 The isotope of an isotopically substituted compound is enclosed by parentheses in its name but not in its structural formula: (14C)methane, 14CH4 ; (1-2H1)ethanol, CH3-CH2H-OH ; etc. 2018-01-04 For specifically labeled compounds (when a unique isotopically substituted compound is formally added to the analogous isotopically unmodified compound), the structural formula is written with the appropriate nuclide symbol(s) and multiplying subscript, if any, enclosed in square brackets. Thus a formal mixture of 14CH4 and CH4 gives the specifically labeled compound [14C]H4