9313. Thidiazuron

Nomenclature

CAS number: 51707-55-2
N-Phenyl-N′-1,2,3-thiadiazol-5-ylurea; 5-(N-phenylcarbamoylamino)-1,2,3-thiadiazole; thiadiazuron; TDZ; SN-49537; Dropp (Bayer CropSci.); Ginstar (Bayer CropSci.).
C9H8N4OS; mol wt 220.25.
C 49.08%, H 3.66%, N 25.44%, O 7.26%, S 14.56%.

Description and references

Non-purine containing urea derivative with cytokinin activity. Prepn: H. Schulz, F. Arndt, DE 2214632; eidem, US 3883547 (1973, 1975 both to Schering AG). Field trial in cotton: A. R. Hopkins, R. F. Moore, J. Econ. Entomol. 73, 768 (1980). Effect of temperature and adjuvants on activity in cotton: C. E. Snipes, G. D. Wills, Weed Sci. 42, 13 (1994). Review of effect on shoot formation and axillary shoot proliferation: C.-Y. Lu, In Vitro Cell. Dev. Biol. 29P, 92-96 (1993); on woody plant tissue culture: C. A. Huetteman, J. E. Preece, Plant Cell Tissue Organ Cult. 33, 105-119 (1993).

Chemical structure

Properties

Crystals from isopropanol, mp 217° (dec). Very sol in DMSO, DMF, acetone, cyclohexanone, isophorone. Slightly sol in aliphatic and aromatic hydrocarbons and water.

Use

Cotton defoliant; plant growth regulator in tissue culture.