81741-99-3

Ro 22-0654 Ro 22 0654,Ro 220654 Methyl 4-amino-5-ethyl-3-thiophenecarboxylate 4-Amino-5-ethyl-3-thiophenecarboxylic acid methyl ester 4-amino-5-ethylthiophene-3-carboxylic acid methyl ester 3-Thiophenecarboxylic acid, 4-amino-5-ethyl-, methyl ester