| 摘要 |
The invention concerns new carboxylic acid amides of the formula WHEREIN M denotes a divalent bridge member of the series -S-, -S-A-S- and -S-CH2-CH2-(O-CH2-CH2)p-S-, A denotes an alkylene residue containing one to 18 carbon atoms, p denotes an integer from one to three, R1 denotes an alkyl group and R2 denotes alkyl or hydrogen.
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