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26237-85-4

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26237-85-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 26237-85-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,2,3 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 26237-85:
(7*2)+(6*6)+(5*2)+(4*3)+(3*7)+(2*8)+(1*5)=114
114 % 10 = 4
So 26237-85-4 is a valid CAS Registry Number.

26237-85-4Relevant articles and documents

New Studies and a Reinvestigation on Cycloadditions of (-)-Thebaine: Asymmetrical Diels-Alder Reactions with a Conformationally Fixed Chiral Diene

Pindur, Ulf,Keilhofer, Diana

, p. 947 - 954 (2007/10/02)

Some novel Diels-Alder reactions of the opium alkaloid (-)-thebaine (1) as an electron-rich diene and a reinvestigation of its reactions with cyclic and acyclic dienophiles are described.The ?-facial selectivity has been studied on the basis of structural analyses of the cycloadducts.Some related results on cycloaddition reactions of 1-methoxy-1,3-cyclohexadiene (11) are also reported. - Key Words: (-)-Thebaine / 1,3-Cyclohexadiene, 1-methoxy / Diels-Alder Reactions / Alkaloids

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