506423-02-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 506423-02-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,6,4,2 and 3 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 506423-02:
(8*5)+(7*0)+(6*6)+(5*4)+(4*2)+(3*3)+(2*0)+(1*2)=115
115 % 10 = 5
So 506423-02-5 is a valid CAS Registry Number.
506423-02-5Relevant academic research and scientific papers
Synthesis of a-ring synthon of 19-nor-1alpha,25-dihydroxyvitamin D3 from (D)-glucose
-
Page 7, (2010/02/07)
The present invention provides a method for the synthesis of an A-ring synthon phosphine oxide used in the preparation of 19-nor vitamin D compounds, and to novel synthetic intermediates formed during the synthesis. The new method prepares the phosphine oxide from (D)-glucose.
