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Substance Name: Thidiazuron [ANSI:BSI:ISO]
RN: 51707-55-2
UNII: 0091WH7STF
InChIKey: HFCYZXMHUIHAQI-UHFFFAOYSA-N

Note

  • Defoliant and stimulates kiwifruit growth.

Molecular Formula

  • C9-H8-N4-O-S

Molecular Weight

  • 220.2552
 

Classification Codes

  • Agricultural Chemical
  • Growth Regulator / Fertilizer
  • Plant Growth Regulator
  • Reproductive Effect
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Names and Synonyms

Results Name

  • Thidiazuron [ANSI:BSI:ISO]

Name of Substance

  • Thidiazuron
  • Thidiazuron [ANSI:BSI:ISO]

Synonyms

  • (N-1,2,3-Thiadiazolyl-5)-N'-phenylurea
  • 1-Phenyl-3-(1,2,3-thiadiazol-5-yl)urea
  • BRN 1078092
  • Caswell No. 659A
  • Defolit
  • Dropp
  • EINECS 257-356-7
  • EPA Pesticide Chemical Code 120301
  • HSDB 7734
  • N-Phenyl-N'-1,2,3-thiadiazol-5-yl-urea
  • N-Phenyl-N'-1,2,3-thiazol-5-ylurea
  • SN 49537
  • Thidiazuron
  • UNII-0091WH7STF
  • Urea, N-phenyl-N'-1,2,3-thiadiazol-5-yl- (9CI)

Systematic Names

  • 1-Phenyl-3-(1,2,3-thiadiazol-5-yl)urea
  • N-Phenyl-N'-1,2,3-thiadiazol-5-ylurea
  • Urea, 1-phenyl-3-(1,2,3-thiadiazol-5-yl)-
  • Urea, N-phenyl-N'-1,2,3-thiadiazol-5-yl-

Superlist Name

  • 1-Phenyl-3-(1,2,3-thiadiazol-5-yl)urea

Registry Numbers

CAS Registry Number

  • 51707-55-2

FDA UNII

  • 0091WH7STF

System Generated Number

  • 0051707552

Structure Descriptors

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

Smiles

O=C(Nc1ccccc1)Nc2cnns2

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 2813mg/kg (2813mg/kg) BEHAVIORAL: EXCITEMENT Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(1), Pg. 72, 1984.
mouse LD50 oral 3740mg/kg (3740mg/kg) BEHAVIORAL: EXCITEMENT Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(1), Pg. 72, 1984.
quail LD50 oral > 16gm/kg (16000mg/kg)   Pesticide Manual. Vol. 9, Pg. 813, 1991.
rabbit LD50 oral 7100mg/kg (7100mg/kg) BEHAVIORAL: EXCITEMENT Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(1), Pg. 72, 1984.
rabbit LD50 skin > 1gm/kg (1000mg/kg)   Pesticide Manual. Vol. 9, Pg. 813, 1991.
rat LC50 inhalation > 2300mg/m3/4H (2300mg/m3)   Pesticide Manual. Vol. 9, Pg. 813, 1991.
rat LD50 intraperitoneal 4200mg/kg (4200mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C118, 1991.
rat LD50 oral 5350mg/kg (5350mg/kg) BEHAVIORAL: EXCITEMENT Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(1), Pg. 72, 1984.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 211 dec deg C   EXP
pKa Dissociation Constant 8.86 (none)   EXP
log P (octanol-water) 1.77 (none)   EXP
Water Solubility 20 mg/L 23 EXP
Vapor Pressure 2.30E-11 mm Hg 25 EXP
Henry's Law Constant 3.33E-13 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 5.80E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.