221546-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221546-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,4 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221546-68:
(8*2)+(7*2)+(6*1)+(5*5)+(4*4)+(3*6)+(2*6)+(1*8)=115
115 % 10 = 5
So 221546-68-5 is a valid CAS Registry Number.
221546-68-5Relevant academic research and scientific papers
Total synthesis of (+)-furanomycin
Kang, Sung Ho,Lee, Sung Bae
, p. 761 - 762 (2007/10/03)
A highly enantioselective total synthesis of (+)-furanomycin 24 has been achieved via the mercury cation-mediated cyclizations of γ-hydroxy alkene 4 and homoallylic trichloroacetimidate 11 to install the trans-2,5-disubstituted tetrahydrofuran and the (αS