Table 3.

Retention indices of all isomers of dimethylanisole and trimethylphenol.

structure	compound namea	Ib
	2,6-dimethylanisole (23a)	1056
	2,4-dimethylanisole (23b)	1103
	2,5-dimethylanisole (23c)	1104
	3,5-dimethylanisole (23d)	1114
	2,3-dimethylanisole (23e)	1128
	3,4-dimethylanisole (23)	1141
	2,4,6-trimethylphenol (23f)	1198
	2,3,6-trimethylphenol (23g)	1227
	2,4,5-trimethylphenol (23h)	1262
	2,3,5-trimethylphenol (23i)	1267
	2,3,4-trimethylphenol (23j)	1296
	3,4,5-trimethylphenol (23k)	1311

^aThe natural product from H. griseobrunneum is 23, its isomers are designated 23a–k. ^bRetention index I on a HP5-MS column.