| alpha-naphthol | (n) an isomer of naphthol used in dyes |
| alpha-naphthol test | (n) biochemical indicator of the presence of carbohydrates in a solution; if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid, Syn. Molisch's test, Molisch reaction, Molisch test |