منابع مشابه
In vitro reaction of barbiturates with formaldehyde.
Barbiturates are widely used as sedatives, hypnotics, and antiepileptics, and, when coupled with their narrow therapeutic index, the probability that their use will result in accidental or intentional death is significant. When barbiturates are implicated in a murder or suicide, analysis for their presence is often required. Under certain conditions, barbiturates are quite stable, but condition...
متن کاملThe formaldehyde-hemoglobin reaction.
It is now generally accepted that formaldehyde reacts initially with amino groups of proteins to form methylolamines, which then react more slowly to form methylene bridges between the amino groups and such other groups as the amide group and the phenol& indole, and imidazole rings (Fraenkel-Conrat and Olcott (1) ; Alexander et al. (2)). Some of these bridges are intermolecular. The present pot...
متن کاملReaction of Formaldehyde with Phenols: A Computational Chemistry Study
Phenolic resins are important adhesives used by the forest products industry. The phenolic compounds in these resins are derived primarily from petrochemical sources. Alternate sources of phenolic compounds include tannins, lignins, biomass pyrolysis products, and coal gasification products. Because of variations in their chemical structures, the reactivities of these phenolic compounds with fo...
متن کاملHydrogen Atom-formaldehyde Reaction
where H-H-C and H-D-C are weak bonds and make a negligible contribution, leads to a value of -2 kcal. Therefore, E5-E2=1 kcal compared with the experimental value of 1.0 kcal. The preexponential factor for this pair of isotopic reactions can be calculated from the difference in the entropies of activation. Using the same loose complex as above and applying the expression derived by Bigeleisens ...
متن کاملA Colour Reaction of Formaldehyde with Proteids and its Relation to the Adamkiewicz Reaction.
More thani a year ago I observed that the addition of a trace ot formaldehyde to acetic acid, which had beeni deprived by distillation' of its power to give, with sulphuric acid, Adamkiewicz'st reaction for proteids, restored to it its chromogenic power in a very markecd degree. As would be expected, it was found that the acetic acid was Inot essenitial, the formaldehyde, proteid anid sulphuric...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1960
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.81.6_931