Detail of "2082-59-9"

CAS Number:
2082-59-9
Name:
Pentanoic acid,1,1'-anhydride
Superlist Name:
Valeric anhydride
Molecular Structure:
Formula:
C₁₀H₁₈O₃
Molecular Weight:
186.25
Synonyms:
Pentanoicacid, anhydride (9CI);Valeric anhydride (6CI,7CI,8CI);Pentanoic anhydride;Valeric acid anhydride;Valeryl anhydride;n-Valeric anhydride;
Density:
0.959 g/cm³
Boiling Point:
228-230 °C at 760 mmHg
Flash Point:
101.1 °C
Hazard Symbols:
C
Risk Codes:
34
Safety:
26-36/37/39-45 Details

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Supplier:Hangzhou Dayangchem Co., Ltd. [ China (Mainland)]

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Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China

VALERIC ANHYDRIDE

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One step synthesis of 3-n-butyl and 3-n-pentylisocoumarins and -isoquinolones: One step synthesis of 3-n-butyl and 3-n-pentylisocoumarins and -isoquinolones. Mashelkar, U. C.; Bade, A. A.; Walavalkar, K. V. (Organic Research Laboratory, S.S. and L. S. Patkar College, Mumbai 400 062, India). 2082-59-9 and 124394-23-6 which are cas registry numbers of chemicals are mentioned. Journal of Indian Council of Chemists, 19(2), 56-60 (English) 2002 Indian Council of Chemists. CODEN: JICCE7. ISSN: 0971-5037. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Isochroman-1,3-dione is synthesized from homophthalic acid and acid anhydride, which is converted into isoquinolones I (R = n-Bu, n-Pentyl; X = NH, NMe) by the action of ammonia and methylamine and also into isocoumarins I (X = O) by the action of heat. .

Saturated: Saturated .alpha.-chloro aliphatic acids. Roiter, Salomon; Fein, Yerahmiel (Plantex Ltd., Israel). Israeli IL 41782 31 Aug 1976, 5 pp. (English). (Israel). CODEN: ISXXAQ. CLASS: IC: C07C051-58. APPLICATION: IL 73-41782 14 Mar 1973. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) RCHClCO2H (R = H, Me, Et, Pr) were prepd. by treating the corresponding acid anhydrides first with Br and then with Cl. Thus 500 g Ac2O and 10 g Br were heated at 90-100.degree. until discoloration of the mixt., Cl passed through the liq. at <120.degree. (exotherm) for .In this experiment, several chemicals are used like 106-31-0 and 2082-59-9 apprx.8 hr, and the cooled mixt. hydrolyzed with H2O to give 900 g ClCH2COOH. .