Reactions of 6-aminopenicillanic acid with carbohydrates and related substances

Reactions of 6-aminopenicillanic acid with carbohydrates and related substances.

Preparation of 7-aminocephalosporanic acid and 6-aminopenicillanic acid.

the evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology

abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...

Acylation of 6-Aminopenicillanic Acid by Penicillium chrysogenum.

num deacylated phenoxymethylpenicillin about six times faster than benzylpenicillin to 6-aminopenicillanic acid (6-APA) (R. C. Erickson and R. E. Bennett, Bacteriol. Proc., p. 65, 1961; Erickson and Bennett, Appl. Microbiol. 13:738, 1965. This was observed with a penicillin-nonproducing strain, Wis 49408 (obtained from the University of Wisconsin), and with a penicillinproducing strain, P-5009 ...

Spectrophotometric method for the estimation of 6-aminopenicillanic acid.

A simple, rapid, and sensitive method is described whereby 6-aminopenicillanic acid can be spectrophotometrically determined in the presence of penicillins and their degradation products without prior separation. d-(+)-Glucosamine is used as reagent. The effect of such parameters as pH, temperature, and time of heating on the formation of the chromophore is described. The recommended range is f...