13-05176. Isocil [Archived]

Nomenclature

CAS number: 314-42-1
5-Bromo-6-methyl-3-(1-methylethyl)-2,4(1H,3H)-pyrimidinedione; 5-bromo-3-isopropyl-6-methyluracil; Hyvar General Weed Killer (DuPont).
C8H11BrN2O2; mol wt 247.09.
C 38.89%, H 4.49%, Br 32.34%, N 11.34%, O 12.95%.

Description and references

Prepn: Bucha et al., Science 137, 537 (1962). Toxicity study: G. W. Bailey, J. L. White, Residue Rev. 10, 97 (1965). Superseded by bromacil.

Chemical structure

Properties

Crystals from 20% aq ethanol, mp 158-159°. LD50 orally in rats: 3400 mg/kg (Bailey, White).

Use

Herbicide.

Status

This monograph has been retired and is no longer subject to revision or update.