Abstract
WE now communicate some preliminary results of the investigation on methylated agar prepared from the acetate previously described in NATURE1. By the simultaneous deacetylation and methylation of acetylated agar in chloroform; CH3CO = 38.5 per cent), an apparently homogeneous methylated agar was obtained 78° in chloroform; OCH3 = 31 per cent), the methoxyl content of which remained constant despite repeated methylations.
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References
Percival and Sim, NATURE, 137, 997 (1936).
Haworth, Raistrick and Stacey, Biochem. J., 29, 2668 (1935).
Challinor, Haworth and Hirst, J. Chem. Soc., 258 (1931).
Onuki, Chem. Zentr., II, 367 (1933).
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PERCIVAL, E., MUNRO, J. & SOMERVILLE, J. Structure of Agar-Agar. Nature 139, 512–513 (1937). https://doi.org/10.1038/139512b0
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DOI: https://doi.org/10.1038/139512b0
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