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Page 2986
... fractions ( each 10 c.c. ) . One - dimensional paper chromatograms with 80 % phenol on each fraction showed that fractions 4 and 5 contained peptides , B and C fractions 6 contained B and a peptide A ' , resembling A , and fractions 7 ...
... fractions ( each 10 c.c. ) . One - dimensional paper chromatograms with 80 % phenol on each fraction showed that fractions 4 and 5 contained peptides , B and C fractions 6 contained B and a peptide A ' , resembling A , and fractions 7 ...
Page 3768
... fraction eluted was examined by paper chromatography . Faint traces of tetramethyl and dimethyl glucose were detected in the appropriate fractions , but the bulk of the glucose appeared as trimethyl derivatives and was concentrated in ...
... fraction eluted was examined by paper chromatography . Faint traces of tetramethyl and dimethyl glucose were detected in the appropriate fractions , but the bulk of the glucose appeared as trimethyl derivatives and was concentrated in ...
Page 3788
... fraction removed by centrifugation , and the clear solution again dried from the frozen state , yielding the barium salt of fraction B ( 11.3 mg . ) . This fraction had the same R value as the synthetic pantothenic acid - 2 ' : 4 ...
... fraction removed by centrifugation , and the clear solution again dried from the frozen state , yielding the barium salt of fraction B ( 11.3 mg . ) . This fraction had the same R value as the synthetic pantothenic acid - 2 ' : 4 ...
Contents
ONE HUNDRED AND ELEVENTH ANNUAL GENERAL MEETING | 2449 |
483 | 2465 |
Mechanism of Substitution at a Saturated Carbon Atom Part XXXIII Kinetic | 2488 |
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acetic acid acetone acetyl acetyl chloride added alcohol alum aluminium aluminium bromide Amer ammonia anhydride aqueous atom benzene benzyl boiling Calc carbon Chem Chemical Chemistry chloroform chromatography colourless compound concentrated condensation cooled crystallised crystals decomp derivative dilute dissolved distilled dried ester ethanol ether ethyl acetate ethylene evaporated excess extracted filtered filtrate formed Found fraction gave give heated hydrate hydrochloric acid hydrogen bromide hydrogen chloride hydrolysis iodide isolated ketone L-iditol Lecture light petroleum b. p. lignin lithium aluminium hydride m. p. and mixed material method methyl mixed m. p. mixture molecular molecules needles nitrate obtained oxide phase phosphate polymer potassium hydroxide precipitated prepared present Professor pyridine reaction reflux requires residue retinene room temperature salt sample separated sodium hydroxide solid solution solvent stirred structure Table trifluoroiodomethane vapour pressure vitamin washed yellow yield