4H-Imidazol-4-one, 2-amino-1,5-dihydro-1-methyl-, compd. with 3-(2-aminoethyl)-7-methyl-1H-indole-5,6-diol sulfate (salt) (1:1:1) 7-Me-5,6-Dht 7-Methyl-5,6-dihydroxytryptamine 97073-69-3