Crossword-Solution: PENTA 5 letters, 48 clues 🏆 scrabble score: 7

This word "Pentateuch" is not in the Bible; it is a Greek word signifying literally the Five-fold Work; from _penta_, five, and _teuchos_, which in the later Greek means roll or volume.

Fischer and Freudenberg succeeded in preparing the former by shaking a mixture of finely powdered glucose, chloroform, and quinoline with an excess of tricarbomethoxygalloyl chloride for twenty-four hours and precipitating the resulting product with methyl alcohol; suitably purified, a light amorphous colourless substance was obtained which proved to be penta-(tricarbomethoxygalloyl) glucose.

The method of preparation employed in the synthesis of pentagalloyl glucose may be easily applied to other hydroxybenzoic acids, _e.g._ penta[_p_-hydroxybenzoyl] glucose [Footnote: Fischer and Freudenberg, _Ber._, 1912, 45, 933.] was prepared in this way.

Mention must also be made of the corresponding derivative of pyruvic acid and the compound with pyrogallolcarboxylic acid, penta-[pyrogallolcarboyl]glucose.

Parallel decompositions occur between carbon bisulphide and either acetylene or calcium carbide, all the carbon of both substances being eliminated, while the by-product is either sulphuretted hydrogen or calcium (penta) sulphide.