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144344-81-0

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144344-81-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144344-81-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,3,4 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 144344-81:
(8*1)+(7*4)+(6*4)+(5*3)+(4*4)+(3*4)+(2*8)+(1*1)=120
120 % 10 = 0
So 144344-81-0 is a valid CAS Registry Number.

144344-81-0Relevant articles and documents

Ruthenium dioxide in fluoro acid medium. III. Aplication to the synthesis of aporphinic, homoaporphinic and dibenzazocinic alkaloids. Studies towards the preparation of azafluoranthenic skeleton

Landais,Robin

, p. 7185 - 7196 (2007/10/02)

Intramolecular oxidative couplings of phenylalkyltetrahydroisoquinoline precursors in aporphinic and homoaporphinic alkaloids by using RuO2,2H2O in fluoro acidic media were performed. A comparative study of our reagent with TTFA has been made with different precursors. The procedure was also extended to the synthesis of one dibenzazocinic alkaloid. Then, we attempted to synthetize the azafluoranthenic ring, using phenolic and non phenolic isoquinoline precursors.

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