The present invention relates to a piperidine derivative represented by the general formula (I), ##STR1## wherein R.sub.1 is a uni- or divalent carboxylic acid residue, R.sub.2 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.18 acyl group, l is an integer of 1 to 3 and n is 1 or 2, its production and a stabilizer for organic substances containing it as an effective ingredient.
本发明涉及一种由通式(I)所表示的
哌啶衍
生物,其中R.sub.1是一元或二元
羧酸基团,R.sub.2是氢原子或C.sub.1-C.sub.3烷基或C.sub.1-C.sub.18酰基,l为1至3的整数,n为1或2,以及其制备方法和含其作为有效成分的有机物稳定剂。