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5,7-diphenyl-1,3,4-oxadiazolo<3,2-a>pyridilium-2-(α-naphthylaminide) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

77221-09-1

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77221-09-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77221-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,2 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77221-09:
(7*7)+(6*7)+(5*2)+(4*2)+(3*1)+(2*0)+(1*9)=121
121 % 10 = 1
So 77221-09-1 is a valid CAS Registry Number.

77221-09-1Relevant academic research and scientific papers

Fused Mesoionic Heterocycles: Synthesis of 1,3,4-Triazolopyridine Derivatives

Molina, Pedro,Alajarin, Mateo,Argues, Antonio,Benzal, Raimundo,Hernandez, Higinio

, p. 1891 - 1897 (2007/10/02)

A number of mesoionic derivatives of 1,3,4-triazolopyridine have been prepared.The 1,3,4-oxadiazolopyridylium-2-aminides , available from 1,3,4-oxadiazolopyridylium-2-olate (12) and N-aryliminotriphenylphosphoranes, under

Fused Mesoionic Heterocycles: Synthesis of 1,3,4-Oxadiazolopyridine and 1,3,4-Thiadiazolopyridine Derivatives

Molina, Pedro,Alajarin, Mateo,Arques, Antonio,Benzal, Raimundo

, p. 351 - 356 (2007/10/02)

Two general methods are reported for the preparation of mesoionic derivatives of 1,3,4-oxadiazolopyridine and 1,3,4-thiadiazolopyridine from 1-amino-4,6-diphenyl-2-pyridone (3) and 1-amino-4,6-diphenylpyridine-2-thione (4), respectively.The

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