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428509-97-1

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428509-97-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 428509-97-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,8,5,0 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 428509-97:
(8*4)+(7*2)+(6*8)+(5*5)+(4*0)+(3*9)+(2*9)+(1*7)=171
171 % 10 = 1
So 428509-97-1 is a valid CAS Registry Number.

428509-97-1Relevant articles and documents

Synthesis of dicobalt hexacarbonyl 5-p-tolylethynyl-2′-deoxyuridine

Esho, Noor,Davies, Brian,Lee, Janet,Dembinski, Roman

, p. 332 - 333 (2002)

Reactions of 5-p-tolylethynyl-2′-deoxyuridine and 3′,5′-diO-acetyl-5-p-tolylethynyl-2′-deoxyuridine with Co2(CO)8 in THF gave 5-p-tolC2[Co2(CO)6]-2′-deoxyuridine and 3′,5′-diO-acetyl-5-p-tolC2[Co2(CO) 6]-2′-deoxyuridine (92 and 66%).

Zinc-catalyzed cycloisomerizations. Synthesis of substituted furans and furopyrimidine nucleosides

Sniady, Adam,Durham, Audrey,Morreale, Marco S.,Marcinek, Andrzej,Szafert, Slawomir,Lis, Tadeusz,Brzezinska, Krystyna R.,Iwasaki, Takanori,Ohshima, Takashi,Mashima, Kazushi,Dembinski, Roman

, p. 5881 - 5889 (2008/12/21)

(Chemical Equation Presented) 5-Endo-dig cycloisomerization of 1,4- and 1,2,4- mostly aryl-substituted but-3-yn-1-ones in the presence of a catalytic amount of zinc chloride etherate (10 mol %) in dichloromethane at room temperature gave 2,5-di- and 2,3,5

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