Title: Cacotheline
CAS Registry Number: 561-20-6
CAS Name: 2,3-Dihydro-4-nitro-2,3-dioxo-9,10-secostrychnidin-10-oic acid
Molecular Formula: C21H21N3O7
Molecular Weight: 427.41
Percent Composition: C 59.01%, H 4.95%, N 9.83%, O 26.20%
Literature References: A nitro derivative of brucine made by treating brucine with 10% nitric acid at 60-70°: Leuchs et al., Ber. 43, 1042 (1910). Structure: Teuber, ibid. 86, 232 (1953). Used as reversible redox indicator for Sn+2 titrations: P. Szarvas, J. Lantos, Talanta 10, 477 (1963).
Properties: Yellow crystals; sparingly sol in water.
Use: Indicator.

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