Table 1.

Chemical structure and physical characters of the six common anthocyanindins.

Chemical Structure	Substitution		Anthocyanidin Name	Color	λmax in the Visible Spectrum
	R1	R2
	H	H	Pelargonidin (Pg)	Orange	494 nm
	OH	H	Cyanidin (Cy)	Orange-red	504 nm
	OH	OH	Delphinidin (Dp)	Blue-red	508 nm
	OCH3	H	Peonidin (Pn)	Orange-red	506 nm
	OCH3	OH	Petunidin (Pt)	Blue-Red	508 nm
	OCH3	OCH3	Malvidin (Mv)	Blue-red	510 nm