Structural Formula Vector Image
Title: Urothion
CAS Registry Number: 19295-31-9
CAS Name: 2-Amino-7-(1,2-dihydroxyethyl)-6-(methylthio)thieno[3,2-g]pteridin-4(3H)-one
Molecular Formula: C11H11N5O3S2
Molecular Weight: 325.37
Percent Composition: C 40.61%, H 3.41%, N 21.52%, O 14.75%, S 19.71%
Literature References: Constituent of normal human urine: Koschara, Z. Physiol. Chem. 277, 284 (1943). Structure: Tschesche et al., Ber. 88, 1251 (1955). Revised structure: Goto et al., Tetrahedron Lett. 1967, 4507; eidem, J. Biochem. (Tokyo) 65, 611 (1969). Synthesis: Sakurai, Goto, Tetrahedron Lett. 1968, 2941; eidem, J. Biochem. (Tokyo) 65, 755 (1969).
Properties: Orange-colored clusters of crystals, not melted at 360°. Shows mutarotation: [a]D20 -20° (after 15 hrs in 0.05N NaOH). Soly in water at pH 6.6 about 1:10,000. More sol in alkaline soln. Also sol in acids. Practically insol in the usual organic solvents.
Optical Rotation: [a]D20 -20° (after 15 hrs in 0.05N NaOH)

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