54947-74-9 Usage
Description
4-Methyloctanoic acid, also known as Hircinoic Acid, presents as a colorless to pale-yellow oil. It is slightly soluble in chloroform, DMSO and ethyl acetate. Store in a tightly closed container in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. This substance is stable under recommended storage conditions. 4-Methyloctanoic Acid is incompatible with strong oxidizing agents as well as strong bases. This chemical causes severe skin burns and eye damage.
Chemical Properties
4-Methyloctanoic acid has a fatty, musty, plastic odor. This compound is also reported to have a goat, costus, mutton
odor
Physical properties
4-Methyloctanoic acid is one of the acids mainly responsible for the so-called "soo" odour of mutton. The analogue 4-Ethyloctanoic acid (found in Virginia tobacco and Costus root oil) also has a related goaty odor; this analog has the lowest threshold of all the fatty acids at 1.8 ppb. 4-Methyloctanoic acid is used in flavours for cheese, meat, tobacco and (possibly) fish. Normal use levels in finished consumer product: up to 3 ppm.
Occurrence
Reported found in cooked mutton fat, raw and cooked mutton, lamb, and blue, cheddar, parmesan, provolone
and romano cheeses
Aroma threshold values
Aroma characteristics at 1.0% in PG: waxy, fatty, meaty, reheated beef-like with a slightly lactonic cheesy
nuance
Taste threshold values
Taste characteristics at 10 ppm: fatty, waxy, creamy and lactonic with a satiating fatty mouthfeel and metallic nuances.
General Description
4-Methyloctanoic acid is a branched fatty acid commonly used in the flavor and fragrance industries. This compound gives sweaty and goaty flavors to the mutton meat and goat′s milk cheese, respectively.
Biochem/physiol Actions
Taste at 10 ppm
Check Digit Verification of cas no
The CAS Registry Mumber 54947-74-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,4 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 54947-74:
(7*5)+(6*4)+(5*9)+(4*4)+(3*7)+(2*7)+(1*4)=159
159 % 10 = 9
So 54947-74-9 is a valid CAS Registry Number.
InChI:InChI=1/C9H18O2/c1-3-4-5-8(2)6-7-9(10)11/h8H,3-7H2,1-2H3,(H,10,11)/p-1/t8-/m0/s1
54947-74-9Relevant articles and documents
One-Step Synthesis of Racemic 4-Methyloctanoic Acid, a Component of the Aggregation Pheromone of Oryctes rhinoceros
Sultanov,Ismagilov,Dzhemilev
, p. 1122 - 1123 (2013)
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New synthesis of vanillin by degradation of lignin in presence of functional basic ionic liquid
Yi, Fengping,Jiang, Xiaoyan,Niu, Jihua,Zhang, Lirong,Wang, Zhen
, p. 885 - 888 (2015/02/05)
The degradation of lignin catalyzed by functional basic ionic liquid was investigated. Higher conversion of lignin and simpler degradation product composition were obtained in the presence of basic ionic liquid, comparing with that under traditional NaOH
Method for Producing Isononanoic Acids from 2-Ethyl Hexanol
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Paragraph 0062-0071, (2015/07/15)
Process for preparing isononanoic acid proceeding from 2-ethylhexanol, characterized in that (a) 2-ethylhexanol is dehydrated to octene in the presence of a catalyst; (b) the octene obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give isononanal; and (c) the isononanal obtained in step b) is oxidized to isononanoic acid.
