5 Result(s)
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Article
Fluoroacetamide as a Systemic Insecticide
IT may be of interest to report that we found, as preliminary to many field experiments on the systemic insecticidal activity of fluoroacetamide against aphid pests of a number of flowering plants, that cuttin...
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Article
Assay of Cation-Active Antiseptics
The agar-plate or the cylinder-plate method of testing the effectiveness of antiseptics and antibiotics is now a well-known laboratory technique; and it is the basis of quantitative estimations of penicillin and ...
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Article
Prof. A. E. Tchitchibabin
ALEXEJ EUGUENIEVITSCH TCHITCHIBABIN, born at Kusemino, Poltava, in 1871, recently died in Paris at the age of seventy-four. He studied at the University of Moseow from 1888 for four years, and published his fi...
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Article
Acid Hydrolysis of Sulphapyridines
SULPHAPYRIDINE (M and B 693) is readily hydrolysed by dilute mineral acids1. Many isomerides of sulphapyridine have been made and it has been found that the three isomeric derivatives from 3-aminopyridine (3-(o-,...
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Article
Constitution of a Sulphonamide
Crossley, Northey and Hultquist1 consider that 2–(p–aminobenzenesulphonamido) pyridine has the constitution I below and not II or III mainly on the grounds that it is unchanged after prolonged boiling with concen...
