CAS No.4949-44-4,Pentanoic acid, 3-oxo-,ethyl ester Suppliers,MSDS download

Detail of "4949-44-4"

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CAS Number:

4949-44-4

Name:

Pentanoic acid, 3-oxo-,ethyl ester

Superlist Name:

Ethyl propionylacetate

Molecular Structure:

Formula:

C₇H₁₂O₃

Molecular Weight:

144.17

Synonyms:

3-Oxopentanoic acid ethyl ester;Valericacid, 3-oxo-, ethyl ester (6CI,7CI,8CI);3-Oxovaleric acid ethyl ester;Ethyl 3-ketopentanoate;Ethyl 3-oxopentanoate;Ethyl 3-oxovalerate;Ethyl propanoylacetate;Ethyl propioacetate;Ethyl b-oxovalerate;NSC 7251;NSC 78662;Propionylacetic acid ethyl ester;

EINECS:

225-593-5

Density:

0.996 g/cm³

Boiling Point:

192.988 °C at 760 mmHg

Flash Point:

77.778 °C

Appearance:

colourless liquid

Hazard Symbols:

Risk Codes:

36/37/38

Safety:

26-36 Details

Reference

2-Methyl-4-nitroisoxazolin-5-one: ring transformation to 3-nitropyrroles: 2-Methyl-4-nitroisoxazolin-5-one: ring transformation to 3-nitropyrroles.Several substances are used for example 4949-44-4 and 186645-67-0 which are their cas registry numbers. Ariga, Masahiro; Nishiwaki, Nagatoshi; Miwa, Yuko; Tani, Keita; Tohda, Yasuo (Dep. of Chemistry, Osaka Kyoiku University, Kashiwara 582, Japan). Heterocycles, 44, 81-84 (English) 1997 Japan Institute of Heterocyclic Chemistry. CODEN: HTCYAM. ISSN: 0385-5414. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Ring transformation of 2-methyl-4-nitroisoxazolin-5-one with some enolate anions afforded 3-nitropyrroles I (R = H, CO2Et, R1 = OEt; R1 = H, R1 = Me). A ring-opened intermediate of the ring transformation was isolated. .

Reductions of keto esters with Baker's yeast in organic solvents - a comparison with the results in water: Reductions of keto esters with Baker's yeast in organic solvents - a comparison with the results in water. Rotthaus, Olaf; Krueger, Doris; Demuth, Martin; Schaffner, Kurt ( Max-Planck-Inst. Strahlenchemie, Muelheim an der Ruhr D-45470, Germany).In this study，4949-44-4 is also used. Tetrahedron, 53(3), 935-938 (English) 1997 Elsevier. CODEN: TETRAB. ISSN: 0040-4020. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) Section cross-reference(s): 22 The enantiomeric excess in redns. of keto esters with Baker's yeast (Saccharomyces cerevisiae) can conveniently be altered in org. solvents such as Et2O, PhMe, hexane and EtOAc, when compared to corresponding transformations in water. Thus, while yields were generally lowest in EtOAc, MeCO(CH2)nCO2Et (n = 0, 1) gave nearly quant. yields of (S)-HOCHMe(CH2)nCO2Et in ￡100% e.e. in the other 4 solvents. RCOCH2CO2Et (I; R = ClCH2) gave slightly lower yields of the corresponding (R)-HOCHRCH2CO2Et in all solvents except H2O. The major product isomer and stereoselectivity from I (R= Et, Pr) varied with the solvent. .

Detail of "4949-44-4"

Pentanoic acid, 3-oxo-,ethyl ester

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CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

CAS No.4949-44-4 Ethyl propionylacetate

Reference