5393. Lawsone

Nomenclature

CAS number: 83-72-7
2-Hydroxy-1,4-naphthalenedione; 2-hydroxy-1,4-naphthoquinone.
C10H6O3; mol wt 174.15.
C 68.97%, H 3.47%, O 27.56%.

Description and references

From leaves of Lawsonia inermis L. and L. alba Lam., Lythraceae: Latif, Indian J. Agric. Sci. 29, No. 2-3, 147 (1959), C.A. 55, 14828g (1961). Synthesis: Fieser, J. Am. Chem. Soc. 70, 3165 (1948); Jain, Seshadri, Proc. Indian Acad. Sci. 35A, 233 (1952); Eistert, Müller, Ber. 92, 2071 (1959).

Chemical structure

Properties

Yellow prisms from acetic acid, dec 195-196°.

Therapeutic Category

Ultraviolet screen.

Keywords

Ultraviolet Screen