Toxicity Studies on Triton X 100.-The detergent Triton X 100 at 0.1% concentration was nontoxic when in contact with vegetative forms of bacteria for several hours. The surfactant may be used at room or temperatures of 45 f1' during the membrane washing phase. An additional wash with peptone 0.1% is
Convenient synthesis of N-alkoxymethylbarbituric acids and N-alkoxymethylhydantoins
โ Scribed by Joseph Gal
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 348 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0022-3549
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๐ SIMILAR VOLUMES
## Abstract Procedures for the preparation of Nโferuloylglycine (II), โDLโalanine (XX), โDLโvaline (XXII) and โLโleucine (XXIV) by classical methods are proposed and compared. The spectral characteristics and Rfโvalues of the substances are included. The compounds were synthesized because Nโferuloy
Bis(N-trimethylsilylamino)plumbylenes 1 {[Me 3 Si(R)N] 2 Pb with R = t Bu (a), Me 3 Si (b), 9-(9-borabicyclo[3.3.1]nonyl) (c)} react smoothly with an excess of TiCl 4 to give PbCl 2 and N-trimethylsilylaminotitanium trichlorides 3 aยฑc. In contrast, the analoguous reaction of the corresponding stanny
residue is treated with ice. The aqueous suspension is extracted with benzene (about 300 ml), and the organic phase is at once chromatographed on acid A1203. Benzene (1000 ml) is used for elution. After evaporation of the solvent the residue is taken up in ether, and the solution is decanted at once