2-Imidazolidinethione, 4-methyl- 2-Imidazoline-2-thiol, 4-methyl- 2122-19-2 4-Methyl-2-imidazolidinethione 4-Methylethylenethiourea N,N'-(1,2-Propylene)-thiourea NSC 31254 NSC 68394 PLTU PROPYLENE THIOUREA Propilentiourea [Italian] Propylenthioharnstoff [German]