Table 1. Identification of eight compounds (1−8) from 70% EtOH extract of Calystegia soldanella

Compounds	Retention time (min)	m/z	Molecular formula	Error (mmu)	Identification
1	2.8	[M – H]– = 353.0878	C16H18O9	+0.5	Chlorogenic acid
2	3.3	[M – H]– = 353.0880	C16H18O9	+0.7	Cryptochlorogenic acid
3	4.5	[M – H]– = 337.0924	C16H18O8	+0.1	5-0-(E)-p-courmaroylquinic acid
4	6.6	[M – H]– = 609.1449	C27H30O16	–0.7	Rutin
5	6.9	[M – H]– = 463.0873	C21H20O12	–0.4	Isoquercetin
6	7.4	[M – H]– = 593.1501	C27H30O15	–0.6	Nicotiflorin
7	7.8	[M – H]– = 515.1188	C25H24O12	–0.2	Isochlorogenic acid A
8	8.4	[M – H]– = 515.1184	C25H24O12	–0.6	Isochlorogenic acid C