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81675-25-4

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81675-25-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81675-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,7 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81675-25:
(7*8)+(6*1)+(5*6)+(4*7)+(3*5)+(2*2)+(1*5)=144
144 % 10 = 4
So 81675-25-4 is a valid CAS Registry Number.

81675-25-4Downstream Products

81675-25-4Relevant articles and documents

Unusual Michael Reaction of Acyclic 1,3-Dicarbonyl Compounds with Nitro-olefins. A Novel Pyrrole Synthesis

Gomez-Sanchez, Antonio,Stiefel, Berta Marco,Fernandez-Fernandez, Rosario,Pascual, Conrado,Bellanato, Juana

, p. 441 - 447 (2007/10/02)

Acetoacetic esters and pentane-2,4-dione undergo unusual Michael reactions with β-nitrostyrene in methanol-sodium methoxide to form the (2R,3R,2'S,3'S)-bis-(4-acyl-2,3-dihydro-5-methyl-3-phenyl-2)-furylhydroxylamines (5) in high yields.The normal adducts

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