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1·Isolation and identification of low molecular weight constituents of gallotannin and methanolysis products are reported.

本文报道了棓子单宁中低分子量组份和醇解产品的分离鉴定。

2·The polyester or copolyester can be converted into dimethyl terephthalate of binary acid and glycol by method of methanolysis.

介绍用甲醇醇解法把聚酯或共聚酯解聚成二元酸二甲酯和二元醇。