1,2,3,4-Tetrahydro-2,3,5-trimethylpyrimido(3,4-a)indole 5-23-07-00400 (Beilstein Handbook Reference) 61467-30-9 BRN 0747356 PYRIMIDO(3,4-a)INDOLE, 1,2,3,4-TETRAHYDRO-2,3,5-TRIMETHYL-