Alkannin

1,4-Naphthalenedione,5,8-dihydroxy-6-(1-hydroxy-4-methyl-3-pentenyl)-, (S)- ; 1,4-Naphthalenedione,5,8-dihydroxy-6-[(1S)-1-hydroxy-4-methyl-3-pentenyl]- (9CI) ; 1,4-Naphthoquinone, 5,8-dihydroxy-6-(1-hydroxy-4-methyl-3-pentenyl)-, (-)-(8CI) ; Alkanet extract ; Alkanet extract, inspissated ; Alkanna red ; Alkannin ; Anchusa acid ; Anchusin ; C.I. 75530 ; C.I. Natural Red 20 ;