| Identification | More | [Name]
CACOTHELINE | [CAS]
561-20-6 | [Synonyms]
CACOTHELINE
NITROBRUCIQUINONE
2,3-dihydro-4-nitro-2,3-dioxo-10-secostrychnidin-10-oicacid
CACOTHELIN
CacothelineGr(RedoxIndicator)
nitrobrucine
Cacotheline Monohydrate
2,3-Dihydro-4-nitro-2,3-dioxo-9,10-secostrychinidin-10-oic acid | [EINECS(EC#)]
209-215-6 | [Molecular Formula]
C21H21N3O7 | [MDL Number]
MFCD00077211 | [Molecular Weight]
427.41 | [MOL File]
561-20-6.mol |
| Safety Data | Back Directory | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes . | [RIDADR ]
2811 | [HS Code ]
2939.79.0000 | [HazardClass ]
6.1(b) | [PackingGroup ]
III |
| Hazard Information | Back Directory | [Uses]
Indicator. | [Purification Methods]
Cacotheline gives yellow crystals from H2O. It is then dried over H2SO4 which gives the dihydrate, and in a vacuum over H2SO4 at 105o it forms the anhydrous compound. The hydrochloride separates as the hydrate (on heating in vacuum at 80o) in orange-yellow prisms or plates, m 250o(dec) and forms a resorcinol complex which gives brown crystals from EtOH, m 325o, and a hydroquinone complex as dark red crystals from EtOH, m 319o. [Leuchs & Leuchs Chem Ber 43 1042 1910, Teuber Chem Ber 86 232, (UV: 242) 1953; complexes: Gallo Gazz Chim Ital 85 1441 1955.] It is used in the titrimetric estimation of Sn2+ ions [Szrvas & Lantos Talanta 10 477 1963]. [Beilstein 27 III/IV 8014.] |
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