Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to orcinol: orcinol test


Parent substance of the natural dye orcein, obtained from certain colorless lichens (Lecanora tinctoria, Rocella tinctoria) by treatment with boiling water; used as an external antiseptic in various skin diseases and in chemistry as a reagent for pentoses.
Farlex Partner Medical Dictionary © Farlex 2012


, orcinol (or′sĭn) (-ol″)
A chemical derived from lichens and used as a histological stain.
CAS # 504-15-4
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Purification and properties of orcinol hydroxylase from Pseudomonas putida 01.
Metabolism of resorcinylic compounds by bacteria: orcinol pathway in Pseudomonas putida // J.
The RNA content of the 5% PCA extract can be determined using the orcinol reaction (Schneider, 1957).
Orcinol reagent (3.0 ml) is again added to each tube and the samples are heated at 100[degrees]C for 15 minutes.
As measured by the orcinol assay, only 1% of the mass of the adhesive mucus was carbohydrate.
Kitanaka, "Structures and histamine release inhibitory effects of prenylated orcinol derivatives from Rhododendron dauricum," Journal of Natural Products, vol.
RNA extract was prepared in 20% cold PCA and estimated according to the Orcinol method, while DNA was extracted in 10% hot perchloric acid (PCA) and estimated according to diphenylamine method.
Orcinol, dipotassium hydrogen phosphate ([K.sub.2]HP[O.sub.4]), n-butanol, potassium dihydrogen phosphate (K[H.sub.2]P[O.sub.4]) and trichloroacetic acid (TCA) were purchased from El-Nasr Chemical Co.
The orcinol derivatives tenuiorin (1) and methyl orsellinate (2) were identified as active components of an extract from the lichen Peltigera leucophlebia (Nyl.) Gyeln.