2- ethyl heptanoate

Propionates and higher aliphatic esters generally become less toxic as the si2e of the alkyl carboxylate increases. As an example, the LD q (rat, oral) for ethyl nonanoate [123-29-5] is greater than 43 g/kg, and the LD q (rat, oral) for ethyl heptanoate [106-30-9] is 34.6 g/kg. 

Transesterification. The product obtained from cerate oxidation of the methoxyhydroperoxide from 1-octene in ethanol contained methyl heptanoate but no ethyl heptanoate, and the oxidation product of the ethoxyhydroperoxide in methanol contained ethyl heptanoate but no methyl heptanoate. 

A calibration standard was prepared by concentrating the solution containing 60 mg oil, 0.2 mg ethyl heptanoate and 160 ml pentane to the equivalent volume (ca. 0.2 ml). A Perkin - Elmer Sigma 2B gas chromatograph equipped with a flame ionization detector was used for analysis. The gas chromatographic conditions were as follows ... 

The encapsulated orange oil (0.1 g) was rehydrated in 7.5 ml distilled water via the use of a vortex mixer for 30 sec. Acetone (50 pi) containing 100 jug ethyl heptanoate (internal standard) was added and mixed for another 30 sec. This solution was forced through a preconditioned Sep-pak CIS reverse phase cartridge. 

The C8 aldehyde ester may be produced by cleavage of the 9-hydroperoxide of ethyl llnoleate followed by terminal hydroperoxidation. Further oxidation would produce the corresponding dicarboxylic acid which upon decarboxylation would give rise to ethyl heptanoate. The 8-alkoxy radical may also decompose to give the C7 alkyl radical, which would yield ethyl heptanoate or form a terminal hydroperoxide, and so on. Polymerization, both intra- and intermolecular, is also a major reaction in high temperature oxidation. Combination of alkyl, alkoxy, and peroxy radicals yields a variety of dimeric and polymeric compounds with C-O-C or C-O-O-C crosslinks. 

FID) response factors were not determined for each identified pineapple constituent. Qualitative and quantitative differences were noted between samples and it was observed (by GC/MS) that ethyl heptanoate eluted as a shoulder on the 6-methyl-5-hepten-2-one peak in some runs. Therefore, the use of 6-methyl-5-hepten-2-one was discontinued in later runs. The major compounds found were methyl hexanoate, methyl 2-methylbutanoate, methyl butanoate, methyl octanoate, methyl s-methylthiopropanaote and ethyl acetate. 

SYNS COGNAC OIL ENANTHYUC ETHER ETHYL ENANTHATE ETHYL HEPTANOATE ETHYL n-HEPTANOATE ETHYL HEPTOATE ETHYL HEPTYLATE ETHYL OENANTHATE ETHYL OENANTHYL.ATE FEMANo. 2437 OENANTHIC ETHER... 

Ethyl amyl ketone Ethyl butyrate Ethyl cinnamate Ethyl heptanoate Ethyl heptylate Ethyl lactate... 

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