183559-13-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183559-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,5,5 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 183559-13:
(8*1)+(7*8)+(6*3)+(5*5)+(4*5)+(3*9)+(2*1)+(1*3)=159
159 % 10 = 9
So 183559-13-9 is a valid CAS Registry Number.
183559-13-9Relevant academic research and scientific papers
A practical synthesis of A-ring precursors for 19-nor-1α,25-dihydroxyvitamin D3 analogues
Zhou, Sheng-Ze,Anne, Sofia,Vandewalle, Maurits
, p. 7637 - 7640 (2007/10/03)
A convergent, more practical route to the A-ring precursors 3 and 5 starting from enantiopure (2S,4S)-1,2:4,5-diepoxypentane (11) is described.
