434342-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 434342-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,4,3,4 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 434342-91:
(8*4)+(7*3)+(6*4)+(5*3)+(4*4)+(3*2)+(2*9)+(1*1)=133
133 % 10 = 3
So 434342-91-3 is a valid CAS Registry Number.
434342-91-3Relevant academic research and scientific papers
Synthesis of the optically active bicyclo[4.2.1]nonane Segment of mediterraneols
Miyaoka, Hiroaki,Yokokura, Toshiyuki,Okamura, Takashi,Nagaoka, Hiroto,Yamada, Yasuji
, p. 227 - 230 (2007/10/03)
An efficient method was established for the synthesis of the optically active bicyclo[4.2.1]nonane segment of mediterraneols using diastereoselective sequential Michael reaction and then retro-aldol reaction.