kwas ewerniowy, evernic acid, Evernsäure
TLC, spot tests
class: Orcinol Depsides
Rf values in standard eluents systems: A: 38 · B: 61 · B': 60 · C: 43
Visibility: in natural light: — · in UV-C (254nm): +
Visibility after H2SO4 spraying and 10 min in 110°C charring:
in natural light: orange
in UV-A (ca.360nm): green
Spot tests: K — · C — · KC — · P — · FeCl3 red
microcrystallization
in GE - feathery clusters +-curved needles