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betaines

Originally, the compound betaine, (CH3)3N+–CH2C(=O)O N,N,N-trimethylammonioacetate, and similar zwitterionic compounds derived from other amino acids. By extension, neutral molecules having charge-separated forms with an onium atom which bears no hydrogen atoms and that is not adjacent to the anionic atom. Betaines cannot be represented without formal charges. E.g.
B00637-2
B00637-3
Source:
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1322
InChI=1/C5H11NO2/c1-6(2,3)4-5(7)8/h4H2,1-3H3
KWIUHFFTVRNATP-UHFFFAOYAI
InChI=1/C20H19OP/c21-16-17-22(18-10-4-1-5-11-18,19-12-6-2-7-13-19)20-14-8-3-9-15-20/h1-15H,16-17H2
AFIJGVRRUMMOOG-UHFFFAOYAQ
InChI=1/C4H11O3PS/c1-8(2,3)4-9(5,6)7/h4H2,1-3H3
PWUYMNVXKOWYAD-UHFFFAOYAI
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.B00637.
Original PDF version: http://www.iupac.org/goldbook/B00637.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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