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1416209-39-6

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1416209-39-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1416209-39-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,1,6,2,0 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1416209-39:
(9*1)+(8*4)+(7*1)+(6*6)+(5*2)+(4*0)+(3*9)+(2*3)+(1*9)=136
136 % 10 = 6
So 1416209-39-6 is a valid CAS Registry Number.

1416209-39-6Relevant articles and documents

Condensed sulfur-containing pyridine systems 3.*Construction of penta- and hexacyclic heterocyclic systems by the cascade reaction of 3-cyanopyridine-2(1H)-thiones and 3-cyano-pyridine-2(1H)-thiolates with 8-chloromethyl-3-methyl-7-(2-oxo-2-phenylethyl)xanthene

Dotsenko,Sventukh,Krivokolysko

, p. 1397 - 1409 (2013/04/24)

The alkylation of 3-cyanopyridine-2(1H)-thiones with 8-chloromethyl-3- methyl-7-(2-oxo-2-phenylethyl)- xanthene in a KOH-H2O-DMF system upon heating leads to the formation of pyrido-[3″,2″:4′,5′] thieno[3′,2′:5,6][1,4]diazepino[7,1-f]purine-2,4(3H,6H)-dione derivatives in good yields. Under milder conditions, the intermediates of the cascade reactions, namely, 2-({[3-methyl-2,6-dioxo-7-(2-oxo-2-phenylethyl)-2,3, 6,7-tetrahydro-1H-purin-8-yl]methyl}thio)pyridine-3-carbonitriles, can be isolated and characterized.

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