3,4,5,6-Tetrahydro-2-pyrimidinethiol（Cat No.:R069215）is a sulfur-containing heterocyclic compound derived from pyrimidine, featuring a thiol (-SH) group at the 2-position and partial saturation at the 3 to 6 positions of the ring. This structure imparts both nucleophilic and reducing properties, making it useful as a synthetic intermediate in pharmaceuticals and agrochemicals. Its thiol functionality enables participation in thiol-disulfide exchange, metal coordination, and thiolation reactions. Due to its heterocyclic backbone, it is also of interest in medicinal chemistry for developing bioactive molecules targeting enzymes, nucleic acids, or metal-containing cofactors.