4595 Thidiazuron Thidiazuron is an herbicide and defoliant plant growth regulator used particularly in cotton crops. It is absorbed by leaves. 51707-55-2 40087 C9H8N4OS White powder. Dermal; inhalation. (L2080) The US EPA has found no information indicating thidiazuron shares a common mechanism of toxicity with other substances. (L2080) LD50 > 2 g/kg (L2080). No indication of carcinogenicity to humans (not listed by IARC). Thidiazuron has been registered for use as a pre-harvest cotton defoliant or growth regulator. It removes green leaves and immature fruiting structures, which contribute to cotton staining. (L2080) Relatively few incidents of illness have been reported due to thidiazuron. Since 1992, OPP IDS has only reported 5 incidents as a result of thidiazuron exposure, which all show similar symptoms such as skin rash, nausea, and weakness. However, no medical treatment was required. (L2080) Minor skin rash, nausea, and weakness (L2080). 2014-08-29T06:51:46Z 2014-12-24T20:26:52Z C18812 true OC(NC1=CN=NS1)=NC1=CC=CC=C1 C9H8N4OS InChI=1S/C9H8N4OS/c14-9(12-8-6-10-13-15-8)11-7-4-2-1-3-5-7/h1-6H,(H2,11,12,14) InChIKey=HFCYZXMHUIHAQI-UHFFFAOYSA-N 220.251 220.041881588 Exogenous Solid CHEMBL505661 36635