Cas 98304-43-9,4a-methyl-1,2,3,4,4a,9,10,10aα-octahydro-1α-phenanthrol tosylate

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Check Digit Verification of cas no

The CAS Registry Mumber 98304-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,3,0 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 98304-43:
(7*9)+(6*8)+(5*3)+(4*0)+(3*4)+(2*4)+(1*3)=149
149 % 10 = 9
So 98304-43-9 is a valid CAS Registry Number.

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98304-43-9Relevant academic research and scientific papers

Stereoselective Synthesis of 4a-Methyloctahydrophenanthrenes: A Novel Approach. 2. C-1 Substituted Series

Gonzalez-Sierra, Manuel,Leader, Haim N.,McChesney, James D.

, p. 4450 - 4456 (1985)

We report the stereoselective conversion of 4a-methyl-2,4a,9,10-tetrahydrophenanthrene (1), readily available from phenanthrene by reductive alkylation, via 4a-methyl-2,3,4,4a,9,10-hexahydrophenanthrene (2), into several C-1 substituted compounds.Chemical

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