Methods: Suberic acid was selected as the start material, and the SAHA was obtained through condensation, activation and ammoniated.
方法：以辛二酸为起始原料，经缩合、活化、氨解合成SAHA。
Preferably, the carboxylic acid raw material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass% or less.
所述羧酸原料含有总量小于或等于5质量％的戊二酸、己二酸、庚二酸、辛二酸、癸二酸和1，9-亚壬基二羧酸。
Preferably, the carboxylic acid raw material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass% or less.
所述羧酸原料含有总量小于或等于5质量％的戊二酸、己二酸、庚二酸、辛二酸、癸二酸和1，9-亚壬基二羧酸。
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