Table 1.

Regression data and LLOQs of neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, 3,5-dicaffeoylquinic acid and 3,4-dicaffeoylquinic acid.

Compound	Range (ng ml−1)	Linear regression equation	Correlation coefficient	LLOQ (ng ml−1)
Neochlorogenic acid	0.74–378	y = 0.0036x + 0.0004	0.9966	0.74
Chlorogenic acid	0.50–1030	y = 0.0154x − 0.1573	0.9973	0.50
Cryptochlorogenic acid	1.95–249	y = 0.0051x − 0.0154	0.9963	1.95
3,5-Dicaffeoylquinic acid	0.74–380	y = 0.0057x − 0.0143	0.9931	0.74
3,4-Dicaffeoylquinic acid	5.1–328	y = 0.0018x − 3E−05	0.9929	5.1