CAS No 432-68-8 , b,b-Caroten-4-one

Name: b,b-Caroten-4-one
Synonyms: b-Echinenone;b,b-Caroten-4-one; b-Caroten-4-one, all-trans- (8CI);Echinenon; Echinenone;b-Caroten-4-one (6CI);all-trans-Echinenone; Echinenone, all-trans-; Myxoxanthine;
CAS Registry Number:432-68-8
Flash Point: 370.8°C
Boiling Point: 685.3°Cat760mmHg
Density: 0.972g/cm³
Refractive index: 1.57
Flash Point: 370.8°C
EINECS: 207-083-4
Molecular Weight: 550.86
InChI: InChI=1/C40H54O/c1-30(18-13-20-32(3)23-25-36-34(5)22-15-28-39(36,7)8)16-11-12-17-31(2)19-14-21-33(4)24-26-37-35(6)38(41)27-29-40(37,9)10/h11-14,16-21,23-26H,15,22,27-29H2,1-10H3/b12-11+,18-13+,19-14+,25-23-,26-24+,30-16+,31-17+,32-20+,33-21+
Molecular Formula: C40H54 O
Molecular Structure:

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References of b,b-Caroten-4-one

Title: Echinenone
CAS Registry Number: 432-68-8
CAS Name: b,b-Caroten-4-one
Synonyms: 4-oxo-b-carotene; 4-keto-b-carotene; aphanin; myoxanthin
Molecular Formula: C40H54O
Molecular Weight: 550.86
Percent Composition: C 87.21%, H 9.88%, O 2.90%
Literature References: Carotenoid pigment occurring in algae. Isoln from Aphanizomenon flos-aqua: Tischer, Z. Physiol. Chem. 251, 109 (1938); 260, 257 (1939); from Paracentrotus lividus: Lederer, Compt. Rend. 201, 300 (1935); from Oscillatoria rubrescens: Heilbron, Lythgoe, J. Chem. Soc. 1936, 1376. Structure: Goodwin, Taha, Biochem. J. 47, 244 (1950); 48, 513 (1951); Goodwin, ibid. 63, 481 (1956); Ganguly et al., Arch. Biochem. Biophys. 60, 345 (1956). Synthesis: Akhtar, Weedon, J. Chem. Soc. 1958, 3986; 1959, 4058.
Properties: Orange-red crystals from benzene + methanol, mp 178-180°. Absorption max (chloroform): 472-478 nm. Freely sol in carbon disulfide, chloroform, benzene. Slightly sol in pyridine, ether. Practically insol in methanol. Provitamin A activity 54% of that of all-trans-b-carotene.
Melting point: mp 178-180°
Absorption maximum: Absorption max (chloroform): 472-478 nm

Derivative Type: Oxime
Molecular Formula: C40H55NO
Molecular Weight: 565.87
Percent Composition: C 84.90%, H 9.80%, N 2.48%, O 2.83%
Properties: Red crystals from benzene, mp 208°. Absorption max (chloroform): 464-468 nm.
Melting point: mp 208°
Absorption maximum: Absorption max (chloroform): 464-468 nm