40286-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40286-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,8 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 40286-43:
(7*4)+(6*0)+(5*2)+(4*8)+(3*6)+(2*4)+(1*3)=99
99 % 10 = 9
So 40286-43-9 is a valid CAS Registry Number.
40286-43-9Relevant academic research and scientific papers
A SINGLE POT SYNTHESIS OF 3,4-SECO ACID FROM 4,4-DIMETHYL-3-KETO TRITERPENOID
Pradhan, Bhim P.,Chakraborty, Satyajit,Weyerstahl, Peter
, p. 5463 - 5466 (2007/10/02)
Oxidation of 4,4-dimethyl-3-keto triterpenoid with m-CPBA in presence of p-TsOH furnishes 3,4-seco triterpenoid acid whereas 4-mono-methyl-3-keto-triterpenoid affords only the ε-lactone under the identical condition.
