Bright red crystal or powder, odorless
Melt point: 243 - -248℃
Residual on ignition≤0.1%
Loss on drying≤5.0%
Heavy metals≤10ppm
Aerobic bacteria≤500cfu/g(total plate count)
Molds and eats≤100cfu/g(total plate count)
Pseudomonas aeruginosa /presence none detected in 1g
Staphylococcus aureus /presence none detected in 1g
Escherichia coli /presence none detected in 1g
Salmonella spp /presence none detected in 1g
Assay ≥97.0%
With the production of melanin culture filtrate of Streptomyces as raw material, after extraction, acidic alumina column chromatography, vacuum concentration, petroleum ether recrystallization prepared.
Interferon inducer, clinically used antitumor drugs.