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138404-00-9

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138404-00-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138404-00-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,0 and 4 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138404-00:
(8*1)+(7*3)+(6*8)+(5*4)+(4*0)+(3*4)+(2*0)+(1*0)=109
109 % 10 = 9
So 138404-00-9 is a valid CAS Registry Number.

138404-00-9Relevant articles and documents

Structural Parallels Between the Cardiotonic Steroids and the Erythrophleum Alkaloids - I. Synthesis of Phenanthrenone Precursors to Novel Erythrophleum Alkaloid Analogues

Baker, Robert W.,Knox, John R.,Rogers, Dan H.

, p. 7951 - 7964 (2007/10/02)

(4aR*, 10R*, 10aR*)-10-Hydroxy-7-methoxy-3,4,4a,9,10,10a-hexahydrophenanthren-2(1H)-one (3) has been synthesised with the key step involving intramolecular electrophilic alkylation of the aromatic ring, via a Pummerer rear

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