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113994-58-4

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113994-58-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 113994-58-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,9,9 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 113994-58:
(8*1)+(7*1)+(6*3)+(5*9)+(4*9)+(3*4)+(2*5)+(1*8)=144
144 % 10 = 4
So 113994-58-4 is a valid CAS Registry Number.

113994-58-4Relevant articles and documents

Diterpene Synthesis. IV Synthesis of Some Octahydrophenanthrenes and a Contribution to the Mechanisms of Cyclialkylations

Davis, Brian R.,Johnson, Stephen J.,Woodgate, Paul D.

, p. 1283 - 1299 (2007/10/02)

The cis octahydrophenanthrene (3), a product of the acid-catalysed cyclialkylation of alcohol (1), has been synthesized.Various analogues having cis A/B stereochemistry have also been isolated from cyclization reactions; in these cases there is no rearrangement of the carbon skeleton, as shown by isotopic labelling.Variable temperature n.m.r. studies has been used to define the conformations of some of the cis octahydrophenanthrenes.The mechanisms of cyclialkylations leading to octahydrophenanthrenes can now be clarified.

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