Molecular formula : C7H5NO3S
MW : 81-3-5651-0671 @ No. 183.18
nature : monoclinic crystal. Melting point 228.8-229.7 ° C Sublimation in needle crystallization. 1g the materials can be dissolved in 290ml water, boiling water method give, 31ml ethanol, 12 ml · acetone. Soluble alkali carbonate solution. When diluted sweet sucrose than 500 times.
Preparation : anhydride by amination, degradation, esterification, diazotization, replacement, chlorination, cyclization, acid analysis generated from such steps. (1) amine, degradation, esterification Preparation anthranilic acid methyl ester. (2) diazotization replacement, methyl chloride in neighboring chlorobenzene methyl formate. (3) cyclization, acid analysis to be insoluble saccharin.
purposes : No
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