Synonyms:|Natural Red 28||CAS Number:|1400-62-0||Molecular Formula:|C28H24N2O7||Molecular Weight:|500.50 ||Appearance:|Red to dark red or purple to dark purple powder||Absorptivity|(1%/1cm at A, max 580Anm):|~270||Loss on Drying:|≤7%||Important Note: |This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. ||Toxicity and Hazards: |All products should be handled by qualified personnel only, trained in laboratory procedures.