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

81576-22-9

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81576-22-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81576-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,7 and 6 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81576-22:
(7*8)+(6*1)+(5*5)+(4*7)+(3*6)+(2*2)+(1*2)=139
139 % 10 = 9
So 81576-22-9 is a valid CAS Registry Number.

81576-22-9Relevant academic research and scientific papers

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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