477252-38-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 477252-38-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,7,2,5 and 2 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 477252-38:
(8*4)+(7*7)+(6*7)+(5*2)+(4*5)+(3*2)+(2*3)+(1*8)=173
173 % 10 = 3
So 477252-38-3 is a valid CAS Registry Number.
477252-38-3Relevant articles and documents
METHOD OF PREPARING INHIBITORS OF PHOSPHODIESTERASE-4
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Page 42, (2010/02/07)
In one aspect, the present invention is directed to a one pot method of preparing intermediates of Formula V, which are useful in making inhibitors of phosphodiesterase-4: The present invention is also directed to a method of preparing phosphodiesterase inhibitors comprising the Formula