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502848-52-4

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502848-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 502848-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,2,8,4 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 502848-52:
(8*5)+(7*0)+(6*2)+(5*8)+(4*4)+(3*8)+(2*5)+(1*2)=144
144 % 10 = 4
So 502848-52-4 is a valid CAS Registry Number.

502848-52-4Downstream Products

502848-52-4Relevant articles and documents

Complete control of regioselectivity in the intramolecular [2 + 2] photocycloaddition of 2-alkenyl-3(2H)-furanones by the length of the side chain

Bach, Thorsten,Kemmler, Michael,Herdtweck, Eberhardt

, p. 1994 - 1997 (2007/10/03)

The 2-(ω-alkenyl)-substituted 2-methyl-3(2H)-furanones 2a and 2b were prepared from biacetyl (3) in four reaction steps and in overall yields of 20% and 21%, respectively. They underwent a clean intramolecular [2 + 2] photocycloaddition upon irradiation a

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