Detail of "116-53-0"

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CAS Number:
116-53-0
Name:
Butanoicacid, 2-methyl-
Superlist Name:
2-Methyl butyric acid
Molecular Structure:
Formula:
C₅H₁₀O₂
Molecular Weight:
102.15
Deleted CAS:
600-07-7
Synonyms:
Butyricacid, 2-methyl- (6CI,8CI);Butyric acid, a-methyl- (3CI);2-Ethylpropanoic acid;2-Methyl-n-butyric acid;2-Methylbutanoic acid;Active valeric acid;DL-2-Methylbutanoic acid;DL-2-Methylbutyric acid;DL-a-Methylbutyricacid;Ethylmethylacetic acid;Methylethylacetic acid;NSC 7304;a-Methyl-n-butyric acid;a-Methylbutyric acid;
EINECS:
204-145-2
Density:
0.962 g/cm³
Melting Point:
-70 °C
Boiling Point:
175.3 °C at 760 mmHg
Flash Point:
73.4 °C
Solubility:
45 g/L (20 °C) in water
Appearance:
clear colorless to pale yellowish liquid
Hazard Symbols:
C
Risk Codes:
21/22-34
Safety:
26-36/37/39-45 Details
Transport Information:
UN 3265 8/PG 3

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Reference

Influence of oral intake of seven different antibiotics on fecal short-chain fatty acid excretion in healthy subjects: Influence of oral intake of seven different antibiotics on fecal short-chain fatty acid excretion in healthy subjects. Hoeverstad, Torgeir; Carlstedt-Duke, B.; Lingaas, E.; Norin, E.; Saxerholt, H.; Steinbakk, M.; Midtvedt, T. (Natl. Hosp., Univ. Oslo, Oslo 0027/1, Norway).Some commonly used reagents like 503-74-2 and 64-19-7 are used in this experiment. Scand. J. Gastroenterol., 21(8), 997-1003 (English) 1986. CODEN: SJGRA4. ISSN: 0036-5521. DOCUMENT TYPE: Journal CA Section: 1 (Pharmacology) Fecal excretion of shot-chain fatty acids (SCFAs) was measured by gas chromatog. in healthy subjects before, during, and after they received the antibiotics bacitracin [1405-87-4], co-trimoxazole (trimethoprim-sulfamethazole mixt.) [8064-90-2] doxycycline [564-25-0], erythromycin [114-07-8], nalidixic acid [389-08-2], ofloxacin [82419-36-1], or vancomycin [1404-90-6] orally for 6 days. Intake of bacitracin and vancomycin had pronounced effects of fecal SCFAs excretion and reduced median total concn. of SCFAs from 105.4 to 21.8 mmol/kg and from 69.3 to 19.4 mmol/kg, resp. Erythromycin had moderate effects on the fecal SCFAs excretion, whereas small or no changes were seen during intake of co-trimoxazole, doxycycline, nalidixic acid, and ofloxacin. 2-Methylbutyric acid [116-53-0], a SCFA not previously seen in human feces, was found in the feces of all subjects (median concn. before intake of antibiotic, 1.3 mmol/kg). Bacitracin, erythromycin, nalidixic acid, and vancomycin were detected in high concns. in the feces during therapy, whereas trimethoprim, doxycycline, and ofloxacin were found in relatively low concns. Thus, some, but not all, peroral antimicrobials induce changes in fecal SCFAs, most likely reflecting changes in the colonic ecosystem. .

Structure and effects of mustelid ecomones: Structure and effects of mustelid ecomones. IV. Analysis of behaviorally active glandular secretions of the badger (Meles meles L.). Schildknecht, Hermann; Hiller, Hans (Org.-Chem. Inst., Univ. Heidelberg, Heidelberg D-6900, Fed. Rep. Ger.). Chem.-Ztg., 108(1), 1-5 (German) 1984. CODEN: CMKZAT. 373-49-9 and 40238-46-8 are cas registry numbers of chemicals which are used as reagents here. ISSN: 0009-2894. DOCUMENT TYPE: Journal CA Section: 2 (Mammalian Hormones) In the subcaudal gland secretion of male or female badger, which has a function in that it is used to mark territory and prey, as well as other roles in chem. communication, the following fatty acids were identified: propionate [79-09-4], isobutyrate [79-31-2], butyrate [107-92-6], 2-methylbutyrate [116-53-0], isovalerate [503-74-2], valerate [109-52-4], isocaproate [646-07-1], capryllate [124-07-2], and methylnonanoate [1731-84-6]. These fatty acids were in the foul-odor fraction of the secretion, and the odor of the anal gland secretion was also caused by lower fatty acids. However, lipophilic substances, esp. higher satd. and unsatd. fatty acids, were also present in both subcaudal and anal gland secretions. The following ketones were also identified in anal gland secretions: 3-butylnonan-2-one [58766-10-2], 3-butylundecan-2-one [89355-10-2], 3-butyltridecan-2-one [89355-11-3], and 3-butylpentadecan-2-one [89355-12-4]. .

Detail of "116-53-0"

Butanoicacid, 2-methyl-

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Reference