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ALPHA- [1 record]
Record 1 - internal organization data 2013-08-30
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- alpha-
1, record 1, English, alpha%2D
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- a 1, record 1, English, a
correct, see observation
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A prefix denoting the position of a substituting atom or group in an organic compound. The Greek letters alpha, beta, gamma, etc., are usually not identical with the IUPAC numbering system, 1, 2, 3, etc., since they do not start from the same carbon atom. However, alpha and beta are used with naphthalene ring compounds to show the 1 and 2 positions respectively. Alpha, beta, etc. are also used to designate attachment to the side chain of a ring compound. 1, record 1, English, - alpha%2D
Record number: 1, Textual support number: 1 OBS
"a" refers to the Greek letter alpha. 2, record 1, English, - alpha%2D
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- alpha-
1, record 1, French, alpha%2D
correct, see observation
Record 1, Abbreviations, French
Record 1, Synonyms, French
- a 1, record 1, French, a
correct, see observation
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
1. Préfixe servant à désigner l'un de deux ou de plusieurs isomères. (Par ex., dans la série du naphtalène : a-naphtol). 1, record 1, French, - alpha%2D
Record number: 1, Textual support number: 2 DEF
2. Préfixe utilisé dans la nomenclature stéréochimique des sucres et des stérols. 1, record 1, French, - alpha%2D
Record number: 1, Textual support number: 3 DEF
3. Préfixe indiquant que deux fonctions ne sont séparées par aucun atome de carbone. 1, record 1, French, - alpha%2D
Record number: 1, Textual support number: 1 OBS
La lettre «a» représente la lettre grecque alpha; «alpha» et «a» s'écrivent en italiques. 2, record 1, French, - alpha%2D
Record number: 1, Textual support number: 2 OBS
[...] les préfixes de position [...] sont imprimés en lettres italiques [...] [et ils] n'interviennent pas dans une classification par ordre alphabétique. [Fascicule de documentation AFNOR intitulé : chimie organique. Mode d'écriture des noms systématiques - numéro T01-101, sept. 1969]. 3, record 1, French, - alpha%2D
Record 1, Spanish
Record 1, Textual support, Spanish
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