THE barbituric acid derivatives have a characteristic absorption spectrum in the ultra-violet, and this is the basis of the most reliable methods for their quantitative determination. Small changes of ...
Barbiturates were first used in 1903. They are derivatives of the chemical molecule barbituric acid. There are over 2000 derivatives of barbituric acid that have been used in medicine. It was in 1912 ...
Read before General Surgical Staff of the Massachusetts Memorial Hospitals, on February 13, 1931. Barton — Second Assistant Visiting Surgeon, Massachusetts Memorial Hospitals. For record and address ...
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