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Orcein, pure
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Orcein, pure
Orcein, pure
Orcein, pure
Thermo Scientific Chemicals

Orcein, pure

orcein, C28H24N2O7, CAS Number-1400-62-0, Natural Red 28, 25g, 0.98 to 1.18, 06, 885, Black-Purple to Brown, 500.51, Pure, GHS Signal Word: Warning, GHS H Statement: Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. | CAS: 1400-62-0 | C28H24N2O7 | 500.507 g/mol
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Catalog NumberQuantity
416571000100 g
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Catalog number 416571000
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Chemical Identifiers
CAS1400-62-0
IUPAC Name4,12-bis[(2,4-dihydroxy-6-methylphenyl)amino]-3,13-dimethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-1,3,6,9,12-pentaene-5,11-dione
Molecular FormulaC28H24N2O7
InChI KeyVPEASJIRGSVXBF-UHFFFAOYSA-N
SMILESCC1=CC(O)=CC(O)=C1NC1=C(C)C2=C3C(OC2=CC1=O)=CC(=O)C(NC1=C(C)C=C(O)C=C1O)=C3C
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SpecificationsSpecification SheetSpecification Sheet
Appearance (Color)Brown to dark purple to black
Infrared spectrumConforms
UV Lambda max575 to 583 nm
Absorption Ratio P-15/P+150.98 to 1.18
Loss on drying=<12 %
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This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
RUO – Research Use Only