Table 3.

Diagnostic shift in Band I of the 4’-O-glucuronides in relation to corresponding aglycone

Compound	Aglycone or Glucuronide (O-G)	λmax, nm		Diagnostic shifts in Band I in relation to aglycones	Figure number in SI
		Band II	Band I
4’HF	Aglycone	253.5	324.6		2.9
	4’-O-G	248.8	315.1	−9.5 nm	2.9
4’H6MF	Aglycone	272.4	329.4		2.10
	4’-O-G	272.4	324.6	−4.8 nm	2.10
4’H7MF	Aglycone	ND*	329.4		2.11
	4’-O-G	253.5	319.9	−9.5 nm	2.11
3,4’DHF	Aglycone	234.7	357.8		2.19
	4’-O-G	ND*	353.2	−4.6 nm	2.19
5,4’DHF	Aglycone	267.7	329.4		2.23
	4’-O-G	272.4	315.1	−9.5 nm	2.23
6,4’DHF	Aglycone	272.4	329.4		2.26
	4’-O-G	272.4	319.9	−9.5 nm	2.26
7,4’DHF	Aglycone	253.5	334.1		2.28
	4’-O-G	253.5	324.6	−9.5 nm	2.28
5,4’DH7MF	Aglycone	267.7	338.9		2.29
	4’-O-G	267.7	324.6	−9.5 nm	2.29
3,6,4’THF	Aglycone	ND*	357.8		2.34
	4’-O-G	258.2	348.5	−9.3 nm	2.34
Resokaempferol	Aglycone	253.5	353.2		2.35
	4’-O-G	253.5	348.5	−4.7 nm	2.35
Kaempferol	Aglycone	262.9	366.1		2.36
	4’-O-G	262.9	357.8	−8.3 nm	2.36

^*ND means not detected by the Empower software in the spectra