139955-01-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139955-01-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,5 and 5 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139955-01:
(8*1)+(7*3)+(6*9)+(5*9)+(4*5)+(3*5)+(2*0)+(1*1)=164
164 % 10 = 4
So 139955-01-4 is a valid CAS Registry Number.
139955-01-4Relevant academic research and scientific papers
Stereoselective Aldol Reactions. Reaction of Chiral Ester Titanium Enolate with Aldehydes
Xiang, YiBin,Olivier , Eric,Ouimet, Nathalie
, p. 457 - 460 (2007/10/02)
The chiral ester 1 was enolized under TiCl4/Et3N conditions and reacted with aldehydes to give moderate to good stereoselectivities.The chiral auxiliary group can be removed by simple saponification and recovered.
