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92248-91-4

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92248-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92248-91-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,2,4 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 92248-91:
(7*9)+(6*2)+(5*2)+(4*4)+(3*8)+(2*9)+(1*1)=144
144 % 10 = 4
So 92248-91-4 is a valid CAS Registry Number.

92248-91-4Relevant articles and documents

Palladium-Catalyzed C-Alkylations of the Highly Acidic and Enolic Triacetic Acid Lactone. Mechanism and Stereochemistry

Moreno-Manas, Marcial,Ribas, Jordi,Virgili, Albert

, p. 5328 - 5335 (2007/10/02)

4-Hydroxy-6-methyl-2-pyrone (triacetic acid lactone) (1) is efficiently alkylated at C-3 with primary and secondary allylic substrates under thermodynamic control by using palladium(0) catalysts.Controlled hydrogenation of the resulting allylated derivatives affords pyrones with saturated chains at C-3.Allylic alkylations occur with retention of configuration at the allylic center, probably through a reversible kinetically favored O-alkylation.

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