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101865-05-8

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101865-05-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101865-05-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,8,6 and 5 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 101865-05:
(8*1)+(7*0)+(6*1)+(5*8)+(4*6)+(3*5)+(2*0)+(1*5)=98
98 % 10 = 8
So 101865-05-8 is a valid CAS Registry Number.

101865-05-8Relevant articles and documents

Synthesis of 2,6-dioxo-1,2,3,4,5,6-hexahydroindoles by acid-catalyzed cyclization of acetal-protected (2,4-dioxocyclohex-l-yl)acetamides and their transformation into 5,8,9,10-tetrahydro-6H-indolo[2,1-a]isoquinolin-9-ones

Juma, Benard,Adeel, Muhammad,Villinger, Alexander,Reinke, Helmut,Spannenberg, Anke,Fischer, Christine,Langer, Peter

supporting information; experimental part, p. 1073 - 1079 (2009/12/05)

Acetal-protected (2,4-dioxocyclohex-1-yl)-acetic acids were prepared by allylation of dilithiated 1,3-cyclohexane-1,3-diones, protection of the carbon-yl groups and oxidation of the alkene moiety. Their reaction with amines afforded the corresponding amides which were transformed, by acid-catalyzed cyclization, into various 2,6-dioxo-1,2,3,4,5,6-hexahy-droindoles. The reaction of the latter with triflic acid resulted in the formation of novel 5,8,9,10-tetrahy-dro-6H-indolo[2,1-a]isoquinolin-9-ones.

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