HPLC Separation of Phenolic Acids on Silica Gels Layer-by-Layer Modified with 6,10-Ionene and Dextran Sulfate

Table 3

Chromatographic parameters of the separation of a mixture of FCC and nitrogen-containing compounds.

Compound	, min				N, TP/m
Nadolol	2.57	0.12	2.75	1.60	54000
Tetrahydrozoline	3.07	0.33	1.88	1.47	21000
Atenolol	3.72	0.62	1.95	4.67	18000
Sorbic acid	5.07	1.21	1.17	1.43	33000
Benzoic acid	5.54	1.41	1.28	2.01	28000
Carbinoxamine	6.47	1.81	1.38	1.82	14000
Chlorpheniramine	8.04	2.49	1.29	1.91	9000
Vanillic acid	9.70	3.22	1.12	1.17	28000
Gallic acid	10.63	3.62	2.44	9.00	12000
Sinapic acid	22.63	8.84	1.31	3.18	20000
Caffeic acid	29.00	11.61			16000