1657-32-5 Usage
General Description
1-Oxidopyridin-5-amine, also known as 5-Hydroxypyridone, is a chemical compound with the molecular formula C5H5N2O. It is a heterocyclic organic compound containing a pyridine ring with a hydroxy group attached at the 5th position. 1-oxidopyridin-5-amine is commonly used as a building block in the synthesis of pharmaceuticals and agrochemicals. The presence of the hydroxy group makes 1-oxidopyridin-5-amine a versatile compound for various chemical reactions, allowing for the creation of diverse derivatives with a range of properties. Its uses include serving as a ligand in coordination chemistry and as a precursor for the production of other nitrogen-containing compounds. 1-Oxidopyridin-5-amine has potential applications in drug discovery, materials science, and biochemical research due to its unique structure and reactivity.
Check Digit Verification of cas no
The CAS Registry Mumber 1657-32-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,5 and 7 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1657-32:
(6*1)+(5*6)+(4*5)+(3*7)+(2*3)+(1*2)=85
85 % 10 = 5
So 1657-32-5 is a valid CAS Registry Number.
InChI:InChI=1/C5H6N2O/c6-5-2-1-3-7(8)4-5/h1-4H,6H2
1657-32-5Relevant articles and documents
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Jaffe,Doak
, p. 4441,4442 (1955)
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New aspect of methanesulfonyl chloride: Unusual deoxygenations of pyridine N-oxides with methanesulfonyl chloride and triethylamine
Morimoto, Yoshiki,Kurihara, Hajime,Yokoe, Chiho,Kinoshita, Takamasa
, p. 829 - 830 (2007/10/03)
Treatment of several pyridine N-oxides with an excess of methanesulfonyl chloride and triethylamine brought about a deoxygenation reaction to give efficiently the corresponding reduction products without chlorination of the pyridine nucleus.
Cosmetic composition for imparting to human skin a coloration resembling a natural tan
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, (2008/06/13)
A cosmetic composition for imparting to human skin after exposure to sunlight a coloration resembling a natural tan comprising a cosmetic vehicle suitable for topical application to the skin and an effective amount of at least one compound of the formula STR1 wherein R1 represents hydrogen or amino; R2 represents hydrogen, lower alkyl or amino; R3 represents hydrogen, lower alkyl or amino; R4 represents hydrogen, lower alkyl or chlorine; and R5 represents hydrogen, lower alkyl or hydroxy, or amino when R1 is amino, with the proviso that R1, R2 and R3 are not simultaneously amino; and at least one of R1, R2 R3 means amino or an acid addition salt thereof.
