Cas 28311-52-6,3β-phenyl-5α-cholestan-2-on

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Check Digit Verification of cas no

The CAS Registry Mumber 28311-52-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,3,1 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 28311-52:
(7*2)+(6*8)+(5*3)+(4*1)+(3*1)+(2*5)+(1*2)=96
96 % 10 = 6
So 28311-52-6 is a valid CAS Registry Number.

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28311-52-6Relevant articles and documents

Circular Dichroism, LXXXI. - Synthesis and Circular Dichroism of Steroids with an Isochromanone Chromophore

Antus, Sandor,Snatzke, Guenther,Steinke, Iris

, p. 2247 - 2261 (2007/10/02)

Starting from cholesterol the three possible stereoisomeric isochromanes 10-12 have been synthesized; their oxidation gave the corresponding lactones 13-15.The n --> ?* band of the isochromanone("benzoic acid ester") chromophore could unequivoc

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28311-52-6