6626. (4-Nitrophenyl)urea

Nomenclature

CAS number: 556-10-5
C7H7N3O3; mol wt 181.15.
C 46.41%, H 3.89%, N 23.20%, O 26.50%.

Description and references

Prepn from N-substituted S-phenylthiocarbamates: Crosby, Niemann, J. Am. Chem. Soc. 76, 4458 (1954).

Chemical structure

Properties

Prisms from abs ethanol, needles from dil ethanol, mp 238°. Practically insol in cold water. Sol in boiling water, methanol, ethanol, dimethylformamide. Sparingly sol in ether, benzene.