It may be synthesized from resorcin and malic anhydride or from β resorcyl aldehyde, acetic anhydride and sodium acetate.
The most efficient applications are those of sulphur and resorcin, the same as prescribed in ordinary acne.
The application of a strong alcoholic solution of resorcin, twenty to fifty per cent.
Lotions of ichthyol and of resorcin, five to sixty grains to the ounce; ichthyol in ointment, five- to twenty-per-cent.
In such cases, if resorcin preparations also fail, the mercurial lotion and ointment employed in acne may be prescribed.
resorcin (1.3 or meta dioxybenzene) is decomposed in a somewhat similar manner.
The following are well-known synthetic indicators: hacmoid, obtained from resorcin and sodium nitrite, resembles litmus.
resorcinol res·or·cin·ol (rĭ-zôr'sə-nôl', -nōl') or res·or·cin (-sĭn)
A white crystalline compound used primarily as an antiseptic in skin diseases such as psoriasis or eczema, but also used in the treatment of nausea, asthma, whooping cough, and diarrhea.