has role has functional parent independent continuant thiourea N-phenylthiourea CHEBI:46261 A member of the class of thioureas that is thiourea in which one of the hydrogens is replaced by a phenyl group. Depending on their genetic makeup, humans find it either very bitter-tasting or tasteless. This unusual property resulted in <em>N</em>-phenylthiourea being used in paternity testing prior to the advent of DNA testing. thioureas EC 1.14.18.1 (tyrosinase) inhibitor