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132681-17-5

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132681-17-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 132681-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,6,8 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 132681-17:
(8*1)+(7*3)+(6*2)+(5*6)+(4*8)+(3*1)+(2*1)+(1*7)=115
115 % 10 = 5
So 132681-17-5 is a valid CAS Registry Number.

132681-17-5Relevant articles and documents

Regioselective synthesis of the bridged tricyclic core of Garcinia natural products via intramolecular aryl acrylate cycloadditions

Tisdale, Eric J.,Chowdhury, Chinmay,Vong, Binh G.,Li, Hongmei,Theodorakis, Emmanuel A.

, p. 909 - 912 (2002)

(equation presented) Two different routes to the tricyclic core of Garcinia-derived natural products are described. The first approach is based on a tandem Claisen/ Diels-Alder rearrangement and delivers the desired lactone 14. The second approach, employ

Studies of Chromenes. Part 9. Syntheses of Chromenequinones

Brown, Philip E.,Lewis, Robert A.,Waring, Mark A.

, p. 2979 - 2988 (2007/10/02)

Syntheses of 2,2-dimethylchromene-5,8-quinone, 2,2-dimethylchromene-6,7-quinone, and 6,7-dimethoxy-2,2-dimethylchromene-5,8-quinone are described.Being easily bioreductible to electron-rich chromenes these compounds, and their oxirane derivatives, are of

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