1H-Pyrido(3,4-b)indole-1-carboxylic acid, 2,3,4,9-tetrahydro-, nitrosated 2,3,4,9-Tetrahydro-1H-pyrido(3,4-b)indole-1-carboxylic acid, nitrosated Nitrosated-1-carboxyl-1,2,3,4-tetrahydro-beta-carboline UU9780430