128776-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128776-16-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,7 and 6 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128776-16:
(8*1)+(7*2)+(6*8)+(5*7)+(4*7)+(3*6)+(2*1)+(1*6)=159
159 % 10 = 9
So 128776-16-9 is a valid CAS Registry Number.
128776-16-9Relevant academic research and scientific papers
Synthesis of (-)-(S)-3-sec-Butyl- and (+)-(S)-5-sec-Butyl-2(1H)-pyridinone.
Chelucci, Giorgio,Giacomelli, Giampaolo
, p. 311 - 314 (2007/10/02)
Optically active (+)-(S)-5-sec-butyl- and (-)-(S)-3-sec-butyl-2(1H)-pyridinone are synthesized and the relationship between optical activity and minimum optical purity of the latter is determined.
