139696-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139696-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,9 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139696-91:
(8*1)+(7*3)+(6*9)+(5*6)+(4*9)+(3*6)+(2*9)+(1*1)=186
186 % 10 = 6
So 139696-91-6 is a valid CAS Registry Number.
139696-91-6Relevant academic research and scientific papers
Synthesis of optically active β,γ-diketo-p-tolylsulfoxides
Solladie, Guy,Ghiatou, Nasser
, p. 33 - 38 (2007/10/02)
Chiral β,γ-diketo-p-tolylsulfoxides were prepared in high yields by three different methods: 1,3-diketone dianions on menthyl (-)(S) p-tolylsulfinate, methyl (+)(R) p-tolylsulfoxide anion on β-ketoester and finally (+)(R) p-tolylsulfinyl 2-propanone dianion on carboxylic ester,
