Detail of "1943-79-9"

CAS Number:
1943-79-9
Name:
Carbamic acid,N-methyl-, phenyl ester
Molecular Structure:
Formula:
C8H9 N O2
Molecular Weight:
151.18
Synonyms:
Carbamicacid, methyl-, phenyl ester (6CI,7CI,8CI,9CI); DRC 3345; NSC 128138; Phenmec;Phenyl N-methylcarbamate; Phenyl methylcarbamate; S 101
Safety:
Poison by intravenous and intraperitoneal routes. Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of NO_x. See also CARBAMATES and ESTERS. Details

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Methylcarbamic acid phenyl ester

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Herbicides for rice paddies: Herbicides for rice paddies. Isogawa, Takayuki; Kodama, Koshiro; Imamura, Shosuke (Hodogaya Chemical Co., Ltd., Japan). Japan. Kokai JP 51115920 13 Oct 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: A01N009-02. APPLICATION: JP 75-38499 1 Apr 1975. DOCUMENT TYPE: Patent CA Section: 5 (Agrochemicals) Section cross-reference(s): 25 Synergistic herbicidal compns. are prepd. with 3,4-dichloropropionanilide [709-98-8] and I (R1 and R2 = H, halogen, C1-4 alkyl, NO2, MeO, Ph, PhCH2, and Bz; R = C1-4 alkyl). 709-98-8 is also in the experiment. The combination of the 2 components is esp. effective in rice paddies. The synthesis of I is demonstrated. Although application to soils of either 3,4-dichloropropionanilide or Ph methylcarbamate [1943-79-9] (300 and 50 g/10 are, resp.) alone had little activity, the use of the 2 compds. in combination completely controlled weeds such as barnyard grass and broadleaf weeds. .

Energetics of acetylcholinesterase inhibition by alkylphenyl methylcarbamates: Energetics of acetylcholinesterase inhibition by alkylphenyl methylcarbamates. Abdel-Aal, Yehia A. I. (Coll. Agric., Assiut Univ., Assiut, Egypt). Nippon Noyaku Gakkaishi, 8(1), 99-103 (English) 1983. CODEN: NNGADV. ISSN: 0385-1559. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Inhibitory activities of Ph N-methylcarbamate (I) [1943-79-9] substituted with Me, Et, iso-Pr, and tert-Bu groups at the meta position toward bee head acetylcholinesterase [9000-81-1] were 7.13, 75.4, 772.4, and 453.7 times as high as that of I despite their higher activation energies, indicating that main factors controlling the potency of substituted I were favorable orientation and distribution of potential energy among colliding mols. Activities of para-substituted analogs were lower than that of I, which were ascribed to the higher energy barrier. Linear relations were obsd. between the change in the std. entropy of activation and the hydrophobicity or the molar refraction.