Determination of Thiamin 179 form a sulfonyl chloride and cyanamide hydrochloride.2. N-Alkyl substituted iso thioureas interact with chlorine under similar conditions to form sulfonyl chloride and the corresponding alkyl cyanamide derivatives.3. N-Aryl substituted iso thioureas interact with chlorine to give cyanamides containing chlorine substituted in the aryl grouping of the cyanamide.4. N, N' -Diarylisothioureas interact with chlorine to form halogenated diaryl ureas and sulfonyl chlorides.New Haven, Conn.

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Studies on Thiazoles. I. 4-Methylthiazole-S-acetic Acid and Some of its Deriva-

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