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123295-56-7

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123295-56-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123295-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,2,9 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 123295-56:
(8*1)+(7*2)+(6*3)+(5*2)+(4*9)+(3*5)+(2*5)+(1*6)=117
117 % 10 = 7
So 123295-56-7 is a valid CAS Registry Number.

123295-56-7Downstream Products

123295-56-7Relevant articles and documents

Dioxopyrrolines. XL. Photocycloaddition Reaction of 4-Ethoxycarbonyl-5-phenyl-1H-pyrrole-2,3-dione to Dihydrofurans. Formation of a 2,4-Dioxa-10-azatricyclo3,7>undecane Ring System

Sano, Takehiro,Hirose, Miyuki,Horiguchi, Yoshie,Takayanagi, Hiroaki,Ogura, Haruo,Tsuda, Yoshisuke

, p. 4730 - 4735 (2007/10/02)

Photocycloaddition of the dioxopirroline 1 to 2,3-dihydrofurans gave dihydropyridones 7 and 2,4-dioxa-10-azatricyclo3,7>undecanes 8.The structure of 8a was determined by X-ray crystallographic analysis.The mechanism of formation of the adducts are discussed from stereochemical point of view.Keywords---photocycloaddition; dioxopyrroline; 1H-pyrrole-2,3-dione; 2,3-dihydrofuran; dihydropyridone; 2,4-dioxa-10-azatricyclo3,7>undecane; stereo-selection rule

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