C6 H6 02. = C6 H4 (OH)2. Meta-dihydroxyl-benzol.

Named because at first produced from a gum resin (Galbanum), and isomeric with Orcin (from Archil). A neutral crystalline body, soluble in alcohol, ether, and water. Colourless or yellow: melts at 244.4°F. A weaker external antiseptic than Carbolic acid: externally in ointments. Above 1 drachm it is poisonous.

Meta dihydroxyl benzol was built up by Korner from a benzol nucleus: an active antipyretic, similar to salicytic acid.

TheRapeUtics. Cauterises powerfully, is an antiseptic, and has done good in cholera and tuberculosis. Dose, internally, antifermenta-tive and antifebrile, 7 to 10 grains in solution; and for children, 1 to 5 grains in 2 ounces of some bitter infusion. In solution, as a spray, 2 % solution in water, is especially useful in diphtheria. 1 % solution, applied to cut wounds, has a curative antiseptic influence. To be kept in a dark place.

Formula.

Resorcin ......................... 3 grains.

Glycerine ............... 30 „

Water .................................................... 120 "

Mix.

Thioresorcin C6 H4 (OS)2 is a sulphur substitution of resorcin, which may prove a substitute for iodoform: it is a yellowish inodorous powder, insoluble in water, scarcely so in alcohol, but soluble in dilute alkalies. As a dusting powder or ointment (10 to 20 %) with Fossiline or Vaseline in eczema, etc.