(4-Hydroxyphenyl)thiourea 1520-27-0 4-13-00-01132 (Beilstein Handbook Reference) BRN 1102429 NSC 43638 Thiourea, (4-hydroxyphenyl)- (9CI) USAF B-75 Urea, 1-(p-hydroxyphenyl)-2-thio- p-Hydroxyphenylthiourea