3-Picolinic acid 3-***甲酸 59-67-6 ≥98%
4-Picolinic acid 4-***甲酸 55-22-1 ≥98%
中间体 2-Picolinic acid methyl ester 2-***甲酸甲酯 2459-07-6 ≥98%
中间体 3-Picolinic acid methyl ester 3-***甲酸甲酯 93-60-7 C7H7NO2 Methyl nicotinate ≥98%
中间体 4-Picolinic acid methyl ester 4-***甲酸甲酯 2459-09-8 ≥98%
中间体 2-Picolinic acid ethyl ester 2-***甲酸乙酯 2524-52-9 ≥98% Ethyl picolinate 浅***液体