121809-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121809-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,0 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121809-77:
(8*1)+(7*2)+(6*1)+(5*8)+(4*0)+(3*9)+(2*7)+(1*7)=116
116 % 10 = 6
So 121809-77-6 is a valid CAS Registry Number.
121809-77-6Relevant articles and documents
Synthesis of (+)-Turmeronol A, an Inhibitor of Soybean Lipoxygenase, and (+)-ar-Turmerone
Kitahara, Takeshi,Furusho, Yoshio,Mori, Kenji
, p. 1137 - 1140 (2007/10/02)
Syntheses of optically pure turmeronol A and turmerone were achieved in a simple manner starting from ethyl (R)-3-hydroxybutanoate (4) of 100percent e.e.The key step was the displacement of the chiral tosylate (6) with an organocopper reagent.
