(5-Amino-1,2-dihydro-3-(2-naphthalenyl)pyrido(3,4-b)pyrazin-7-yl)-, carbamic acid, ethyl ester 83269-07-2 Carbamic acid, (5-amino-1,2-dihydro-3-(2-naphthalenyl)pyrido(3,4-b)pyrazin-7-yl)-, ethyl ester Ethyl (5-amino-1,2-dihydro-3-(2-naphthalenyl)pyrido(3,4-b)pyrazin-7-yl)carbamate