Table 4.
Masses and unit types of Ac-NE by MALDI TOF MS

Polymer	M+Na+ (positivereflectron)	Unit type
		Cyanidin (n)	Delphinidin (n')
		Dimer	1021	2	0
1079	1		1
1037	0		0
Trimer	1519	3	0
	1579	2	1
	1637	1	2
Tetramer	2018	4	0
	2076	3	1
	2134	0	0
	2192	0	0
Pentamer	2515	5	0
	2574	4	1
	2632	0	0
	2690	0	0

Note: Calculated [M+Na]⁺ = M' + (n+n'-1)(M'-2H) + 58n' + 23, M': 500 Da, H: 1 Da, Na+ adduct: 23 Da, -OAc group: 58 Da