Table 1.

Mass spectral data of the Euphorbia supina polyphenol mixture.

Compounds	[M − H]−/[M + H]+	MS/MS	References
Gallic acid (1)	169	169, 125, 97	[17]
Protocatechuic acid (2)	153	153, 109, 108	[17]
Nodakenin (3)	/409	409, 391, 353, 389, 247, 229, 203, 185	[18]
Quercetin 3-O-hexoside (4)	463	463, 301, 300, 283, 271, 255, 151	[16, 19]
Quercetin 3-O-pentoside (5)	433	433, 300, 273, 271, 255, 179, 151	[20]
Kaempferol 3-O-hexoside (6)	447	447, 285, 255	[16, 21]
Kaempferol 3-O-pentoside (7)	/419	419, 309, 287, 155	[22, 23]
Quercetin (8)	/301	301, 273, 179, 153	[24, 25]
Kaempferol (9)	/287	287, 258, 165, 153, 121	[26, 27]