zeta2-Tocopherol
Title: z2-Tocopherol
CAS Registry Number: 493-35-6
CAS Name: 3,4-Dihydro-2,5,7-trimethyl-2-(4,8,12-trimethyltridecyl)-2H-1-benzopyran-6-ol
Additional Names: 2,5,7-trimethyl-2-(4,8,12-trimethyltridecyl)-6-chromanol; 5,7-dimethyltocol
Molecular Formula: C28H48O2
Molecular Weight: 416.68
Percent Composition: C 80.71%, H 11.61%, O 7.68%
Literature References: Isoln from rice: Green, Marcinkiewicz, Nature 177, 86 (1956). Structure: Green et al., J. Chem. Soc. 1959, 3362. Synthesis: Karrer, Fritsche, Helv. Chim. Acta 21, 1234 (1938); Bergel et al., J. Chem. Soc. 1938, 1382; McHale et al., ibid. 1958, 1600.
Properties: Pale yellow oil. Crystallizes in prisms at -4°. uv max (ethanol): 292 nm (E1%1cm 83.0).
Absorption maximum: uv max (ethanol): 292 nm (E1%1cm 83.0)
 
Derivative Type: 4-Phenylazobenzoate
Molecular Formula: C41H56N2O3
Molecular Weight: 624.89
Percent Composition: C 78.80%, H 9.03%, N 4.48%, O 7.68%
Properties: Crystals from 2-propanol, mp 61°.
Melting point: mp 61°
 
Derivative Type: 3¢,5¢-Dinitrophenylurethane
Molecular Formula: C35H51N3O7
Molecular Weight: 625.80
Percent Composition: C 67.17%, H 8.21%, N 6.71%, O 17.90%
Properties: Plates from 2- propanol + water, mp 65°.
Melting point: mp 65°
 
 
Status: This monograph has been retired and is no longer subject to revision or update.

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