197517-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197517-77-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,5,1 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 197517-77:
(8*1)+(7*9)+(6*7)+(5*5)+(4*1)+(3*7)+(2*7)+(1*7)=184
184 % 10 = 4
So 197517-77-4 is a valid CAS Registry Number.
197517-77-4Relevant academic research and scientific papers
Synthesis of (+)-Homononactic Acid via Iodoetherification
Kiyota, Hiromasa,Abe, Masaki,Ono, Yukie,Oritani, Takayuki
, p. 1093 - 1095 (2007/10/03)
(+)-Homononactic acid, one of the monomers of polynactin, and its 8-epimer were synthesized. The key step was cis-selective iodoetherification of the enone or the α-silyloxyolefin intermediates constructed with Wittig-Horner or Julia coupling reactions, r
