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876926-04-4

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876926-04-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 876926-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,6,9,2 and 6 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 876926-04:
(8*8)+(7*7)+(6*6)+(5*9)+(4*2)+(3*6)+(2*0)+(1*4)=224
224 % 10 = 4
So 876926-04-4 is a valid CAS Registry Number.

876926-04-4Relevant articles and documents

Photochemical intramolecular aromatic substitutions of the imidazol-2-yl radical are superior to those mediated by Bu3SnH

Clyne, Mairead A.,Aldabbagh, Fawaz

, p. 268 - 277 (2007/10/03)

Six-membered photochemical cyclisations of 2-iodo-N-(2-arylethyl)imidazoles proceeded regioselectively in higher yields than the equivalent tin hydride-mediated reactions. The decrease in yield of cyclisation products, 5,6-dihydroimidazo[2,1-a]isoquinolines containing strongly deactivating substituents on the aryl ring confirmed the electrophilic nature of the σ-imidazol-2-yl radicals. The seven-membered cyclisation was only successful under photochemical conditions, as radical reduction occurred with tin hydride. Nitration of 5,6-dihydroimidazo[2,1-a]isoquinoline with nitric/sulfuric acid occurred at the 2- and 8-positions. The Royal Society of Chemistry 2006.

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