Appearance: Dull red powder or granular
Assay: 90%~98% by HPLC
Source: 1.Natural from leaf or root of Indigofera tinctora L, Baphicacanthus cusia Brem, Isatis tinctoria L, Couroupita guianensis Aubl etc.
2.Chemical synthesis
Test Standard: CP2020
CAS: 479-41-4
M.F: C16H10N2O2
M.W: 262.26
Other test details , please email us for COA.
Packing: 25KG/drum or 1KG/bag
Shelf time: 2years