It can be prepared by the oxidation of
Orsellinaldehyde, or through a
Michael adduct: This can also be produced by the hydrolysis of either
everninic acid or
ramalic acid by boiling with
barium hydroxide. When crystallized from
acetone it forms crystalline needles with a melting point of 176 °C. It also forms a crystalline hydrate with a melting point of 186-189 °C when crystallized from water. Orsellinic acid is biosynthesized by a
polyketide pathway. s == References ==