CA Index Name: Benz[b]indeno[1,2-d]pyran-3,4,6a,9, 10(6H)-pentol, 7,11b-dihydro, (6aS,11bR)-
Other Names: cis-( + )-7,11b-Dihydrobenz[b]indeno [1,2-d]pyran-3,4,6a,9,10(6H)-pentol; Benz[b]indeno[1, 2-d]pyran-3,4,6a,9,10(6H)-pentol, 7,11b-dihydro; Benz [b]indeno[1,2-d]pyran-3,4,6a,9,10(6H)-pentol, C.I. 75290; C.I. Natural Black 1; 7,11b-Dihydro, (6aS-cis)-; Hematoxiline; (+ )-Hematoxylin; Haematoxylin; Hematoxylin; Hematoxyline; Hydroxybrasilin; Hydroxybrazilin; NSC 270085
Merck Index Number: 4637
Chemical / Dye Class: Flavone
Molecular Formula: C16H14O6
Molecular Weight: 302.28
Physical Form: White to yellowish crystals turns red on exposure to light
Solubility: Soluble in water, ethanol, ethylene glycol, methyl cellosolve
Melting Point: 140 °C; 200 °C (decompose)
Boiling Point: 579.9 ± 50.0 °C, pressure: 760 Torr
pH Range: 0.0-1.0; 5.0-6.0
Color Change at pH: Red (0.0) to yellow (1.0); pale yellow (5.0) to violet (6.0)
Absorption (λmax): 292 nm
Synthesis: Synthetic methods
Staining Applications: Aluminum; antigen; blood smears; cells; collagen; epithelial cells; eye lens; fish; genes; gluten structure; horny cells; lipid; liver tissues; malignant melanoma; myocardial biopsies; neurons; nucleic acids; nucleus; oil droplets; proteins; starch granules; tissues; hairs; keratin fibers
Biological Applications: Detecting breast cancer, collagen, genes, microorganism; treating age-related macular degeneration, burns, cancer, diabetes, obesity, gastroesophageal reflux disease, peripheral neural and vascular ailments, prostate cancers, skin disorders, viral diseases
Industrial Applications: Plasma display panel; textiles
Safety / Toxicity: Carcinogenicity; cytotoxicity; genotoxicity; mutagenicity; neurotoxicity; pulmonary toxicity
Certification / Approval: Certified by Biological Stain Commission (BSC)