Search results
Results from the WOW.Com Content Network
A package insert from 1970, with Ovrette brand contraception pills A package insert is a document included in the package of a medication that provides information about that drug and its use. For prescription medications , the insert is technical , providing information for medical professionals about how to prescribe the drug.
Cyanocobalamin is the form in most pharmaceutical preparations because adding cyanide stabilizes the molecule. [ 32 ] The total world production of vitamin B 12 , by four companies (the French Sanofi-Aventis and three Chinese companies) in 2008 was 35 tonnes.
Cyanocobalamin is a manufactured form of B 12. Bacterial fermentation creates AdoB 12 and MeB 12, which are converted to cyanocobalamin by the addition of potassium cyanide in the presence of sodium nitrite and heat. Once consumed, cyanocobalamin is converted to the biologically active AdoB 12 and MeB 12. [citation needed] The two bioactive ...
The structure of vitamin B 12 was the first low-molecular weight natural product determined by x-ray analysis rather than by chemical degradation. Thus, while the structure of this novel type of complex biomolecule was established, its chemistry remained essentially unknown; exploration of this chemistry became one of the tasks of the vitamin's chemical synthesis.
Vitamin B 12 deficiency; Other names: Hypocobalaminemia, cobalamin deficiency: Image of the cervical spinal cord in vitamin B 12 deficiency showing subacute combined degeneration. . (A) The midsagittal T2 weighted image shows linear hyperintensity in the posterior portion of the cervical tract of the spinal cord (black arrow
In enzymology, a cyanocobalamin reductase (cyanide-eliminating) (EC 1.16.1.6) is an enzyme that catalyzes the chemical reaction cob(I)alamin + cyanide + NADP + ⇌ {\displaystyle \rightleftharpoons } cyanocob(III)alamin + NADPH + H +
It differs from cyanocobalamin in that the cyano group at the cobalt is replaced with a methyl group. [1] Methylcobalamin features an octahedral cobalt(III) centre and can be obtained as bright red crystals. [2] From the perspective of coordination chemistry, methylcobalamin is notable as a rare example of a compound that contains metal–alkyl ...
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.