Table 3. HPLC-PDA-ESI-MS data on the polyphenolic constituents in the aqueous ethanolic extract of CFE and proposed compounds .

Peak no.	t R (min)	UV λ max (nm)	[M–H] – m/z	MS n	Compound
1	3.2	196, 211	191	MS2 (191): 127, 173, 85, 93; MS3 (127): 85, 99, 109, 127	Quinic acid
2	15.8	259, 285, 323	371	MS2 (371): 353, 341, 191, 173, 197: MS3 (353): 191, 179	Dihydroxydihydrocaffeoylquinic acid
3	19.4	247, 296-298sh, 327	353	MS2 (353): 191; MS3 (191): 127, 173, 111, 93, 85	5CQA
4	23.2	239, 311	337	MS2 (337): 191, 173; MS3 (191): 127, 173, 85	p-Coumaroylquinic acid isomer
5	32.7	240, 300sh, 326	515	MS2 (515): 353; MS3 (353): 191, 173, 179, 135	1,3-Dicaffeoylquinic acid (1,3-diCQA)
6	34.3	217, 240, 300sh, 327	515	MS2 (515): 353; MS3 (353): 191, 173, 179, 135	3,5-Dicaffeoylquinic acid (3,5-diCQA)
7	36.2	258, 298sh, 312	499	MS2 (499): 337, 353, 335, 173; MS3 (337): 173, 179, 191	4-O-p-coumaryl-5-O-caffeoylquinic acid
8	38.4	298sh, 313	483	MS2 (483): 337; MS3 (337): 173, 191, 99	4,5-di-O-p-coumaroylquinic acid (4,5-diCQA)