Monomethylarsonic acid

Molybdenum insoluble compounds Molybdenum soluble compounds Monochloroacetic acid Monochlorobenzene (chlorobenzene) Monocrotophos Monomethyl aniline Monomethyl hydrazine Monomethylarsonic acid Morpholine... 

The arsenic compounds most commonly found in environmental and biological materials, and in working places, are arsenite and arsenate ions [As(III) and As(V)], monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), arsine, di- and tri-... 

MMAA monomethylarsonic acid [(CH3)AsO(OH)2] DMAA dimethylarsinic acid [(CTbhAsOfOH)] MexSn MeSn3+, Me2Sn2+, Me3Sn+... 

Hughes, M.F. and E.M. Kenyon. 1998. Dose-dependent effects on the disposition of monomethylarsonic acid and dimethylarsinic acid in the mouse after intravenous administration. Jour. Toxicol. Environ. Health 53 A 95-112. 

Monomethylarsonic acid (MMA), 3 274 present in water and food, 3 276t Monomethyl ether of hydroquinone (MEHQ)... 

Monomethylarsonic acid (MMA) 50 mg/kg ration for 7-12 weeks produces hepatotoxicity... 

Urine As Extraction, Flame-photometric detection Species detected include inorganic, As(III) and monomethylarsonic acid 87)... 

The use of arsenic and its organic derivatives as herbicides, pesticides, and wood preservatives has been increasing steadily each year. Large quantities of arsenical compounds are manufactured by the chemical industry and eventually find their way into the environment (l ). About seventy percent of these chemicals are inorganic in form and the rest are organoarsenicals (2). Of the organoarsenicals, the most important species from the point of view of use and health effects are monomethylarsonic acid (MMA), dimethylarsenic acid (DMA), and p-aminophenylarsonic acid (p-APA). 

Arsenic compounds with one to four methyl groups attached to the arsenic atom are common constituents of marine samples. The relevant species are monomethylarsonic acid (MMA) (3), dimethylarsinic acid (DMA) (4), trimethylarsine oxide (TMAO) (5), and tetramethylarson-ium ion (TeMA) (6). Of these, MMA and DMA are readily separated... 

Besides producing volatile arsenic species, biological organisms can also create less volatile and more complex organoarsenicals, such as arsenic sugars and methylarsenates (e.g. dimethylarsinic acid, DMA(V), (CH3)2AsO(OH) and monomethylarsonic acid, MMA(V), (CH3)AsO(OH)2) (Chapters 3 and 4 Figure 2.2). 

Maki, T., Takeda, N., Hasegawa, H. and Ueda, K. (2006) Isolation of monomethylarsonic acid-mineralizing bacteria from arsenic contaminated soils of Ohkunoshima Island. Applied Organometallic Chemistry, 20(9), 538-44. 

Monomethylarsonic acid — CH3As(0)(0H)2 (mono-and disodium salts e.g. MSMA (monosodiummethanearsonate) and DSMA (disodiummethylarsonate))... 

Petrick, J.S., Jagadish, B., Mash, E.A. and Aposhian, H.V. (2001) Monomethylarsonous acid (MMA(III)) and arsenite LD50 in hamsters and in vitro inhibition of pyruvate dehydrogenase. Chemical Research in Toxicology, 14(6), 651-56. 

Zakharyan, R.A., Ayala-Fierro, F., Cullen, W.R. et al. (1999) Enzymatic methylation of arsenic compounds. VII. Monomethylarsonous acid (MMA(III)) is the substrate for MMA methyltransferase of rabbit liver and human hepatocytes. Toxicology and Applied Pharmacology, 158(1), 9-15. 

Zakharyan, R.A., Sampayo-Reyes, A., Healy, S.M. et al. (2001) Human monomethylarsonic acid (MMA (V)) reductase is a member of the glutathione-S-transferase superfamily. Chemical Research in Toxicology, 14(8), 1051-57. 

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