16551-52-3 Usage
General Description
1-{[(E)-(3-nitrophenyl)methylidene]amino}pyridinium is a chemical compound with the molecular formula C12H9N3O2. It is a pyridinium derivative that contains a nitrophenyl group and an amino group attached to a pyridine ring. The compound is an organic salt with potential applications in various fields, including medicine and chemistry. It may be used as an intermediate in the synthesis of other compounds or as a reagent in chemical reactions. Additionally, it may exhibit certain biological activities or properties that could make it valuable for research or industrial purposes. The exact characteristics and potential uses of 1-{[(E)-(3-nitrophenyl)methylidene]amino}pyridinium may vary based on its specific properties and the context in which it is employed.
Check Digit Verification of cas no
The CAS Registry Mumber 16551-52-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,5,5 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 16551-52:
(7*1)+(6*6)+(5*5)+(4*5)+(3*1)+(2*5)+(1*2)=103
103 % 10 = 3
So 16551-52-3 is a valid CAS Registry Number.
16551-52-3Relevant articles and documents
Characteristic coloration in formation of N-1-pyridino amidate and enhancing effect of benzaldehydes
Morita,Nagano,Hirobe
, p. 2121 - 2124 (2007/10/02)
N-Aminopyridinium iodide (NAPI) turned a bluish purple color upon the addition of NaOH. The NMR spectral data of the NAPI-NaOH system indicate that N-1-pyridinio amidate (NPA) is the species responsible for the coloration, which is probably due to intramolecular charge transfer transition. The intensity of the coloration increased remarkably with addition of benzaldehyde derivatives, especially p-nitrobenzaldehyde, to the NAPI-NaOH system. NAPI reacted with the benzaldehyde derivatives to form the corresponding Schiff bases. The mechanism of the coloration in the NAPI-NaOH-benzaldehyde derivative system is proposed to involve the formation of betaines, which can also be formed by adding NaOH to the isolated Schiff bases. Furthermore, there was a good correlation between the enhancing effects on the coloration and the redox potentials of the benzaldehyde derivatives. This indicates that benzaldehyde derivatives with an electron-withdrawing substituent group can enhance the coloration intensity much more effectively.
