The cultivation of madder root almost ceased after a synthetic method for making alizarin was discovered in 1868.
Manufacturer / product code: Kremer / 372051
Chemical description: made from the roots of rubia tinctorum. 1,2-dihydroxyantraquinone. Kremer PDF
Color Index: NR9
More info: Pigments Through The Ages Colourlex
No Raman spectra, fluorescence is too high with any laser.
DOWNLOAD paper: “FORS spectral database of historical pigments in different binders”