Patent ID: 7176164

Claim:
A 1,3-selenazolin compound of the chemical formula 1, wherein the substitution groups R1 and R2 are mutually the same and are selected from the group consisting of isopropyl, cyclohexyl, t-butyl, p-tolyl, and o-tolyl; wherein when the substitution groups R1 and R2 are isopropyl, the substitution groups R3 and R4 are one of the following combinations: hydrogen and hydrogen; hydrogen and methyl; methyl and methyl; or hydrogen and phenyl; wherein when the substitution groups R1 and R2 are cyclohexyl, the substitution groups R3 and R4 are hydrogen; wherein when the substitution groups R1 and R2 are t-butyl, the substitution groups R3 and R4 are hydrogen; wherein when the substitution groups R1 and R2 are p-tolyl, the substitution groups R3 and R4 are hydrogen; and wherein when the substitution groups R1 and R2 are o-tolyl, the substitution groups R3 and R4 are hydrogen.