General anthocyanidins structure

Name

Abbreviation

Substitution pattern

Color (pH 1)

λvis-max (nm)

R1

R2

Cyanidin

Cy

OH

H

orange-red

510

Delphinidin

Dp

OH

OH

blue-red

522

Malvidin

Mv

OMe

OMe

blue-red

520

Pelargonidin

Pg

H

H

orange

505

Peonidin

Pn

OMe

H

orange-red

532

Petunidin

Pt

OMe

OH

blue-red

546