kwas norstiktowy, norstictic acid, Norstictinsäure

TLC, spot tests

class: β-Orcinol Depsidones
Rf values in standard eluents systems: A: 40 · B: 29 · B': 32 · C: 30 · G: 57

Visibility: in natural light: — · in UV-C (254nm): +

Visibility after H2SO4 spraying and 10 min in 110°C charring:
in natural light: yellow
in UV-A (ca.360nm): orange

Spot tests: K yellow -> red · C — · KC — · P yellow, orange · FeCl3 wine red

microcrystallization

1 KOH 5% : 1 K2CO3 20% - red needles; GAoT - pale yellow lamellae; GAQ - chlusters of yellowish long lamellae; GAAn - yellow clusters of boat shaped lamellae