Product Name：6-methyl-2-thioxo-1H-pyrimidin-4-one
Synonyms：2-Mercapto-4-methyl-6-hydroxypyrimidine; 4(1H)-pyrimidinone, 2,3-dihydro-6-methyl-2-thioxo-; 6-methyl-2-sulfanylpyrimidin-4-ol; 6-Methyl-2-thioxo-2,3-dihydro-4(1H)-pyrimidinone; 6-Methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-on; 6-Methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine; Methiure; 6-Methyl-2-thiouracil; 4-Hydroxy-2-mercapto-6-methylpyrimidine; 4-Methyl-2-thiouracil; 6-METHYL-2-THIOURACYLE; 6-(methylsulfanyl)pyrimidine-2,4(1H,3H)-dione; 6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one
Molecular Formula：C5H6N2OS
Molecular Weight：142.1789
InChI：InChI=1/C5H6N2OS/c1-3-2-4(8)7-5(9)6-3/h2H,1H3,(H2,6,7,8,9)
CAS Registry Number：56-04-2
EINECS：200-252-3
Density：1.36g/cm3
Boiling point：342.3 deg C at 760 mmHg
Refractive index: 1.638
Flash point: 160.8 deg C
Vapour Pressure: 3.83E-05mmHg at 25 deg C
Methylthiouracil is an antithyroid preparation. It is a thioamide, closely related to propylthiouracil.
Methylthiouracil is not used clinically in the United States, it has a similar mechanism of action and side effect to that of propylthiouricil.
The drug acts to decrease the formation of stored thyroid hormone, as thyroglobulin in the thyroid gland.
The clinical effects of the drug to treat the hyperthyroid state can have a lag period of up to two weeks, depending on the stores of thyroglobulin and other factors.
