299957-47-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 299957-47-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,9,9,5 and 7 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 299957-47:
(8*2)+(7*9)+(6*9)+(5*9)+(4*5)+(3*7)+(2*4)+(1*7)=234
234 % 10 = 4
So 299957-47-4 is a valid CAS Registry Number.
299957-47-4Relevant academic research and scientific papers
Hydrogen-atom abstraction/cyclization in synthesis. Direct syntheses of coumestan and coumestrol
Kraus, George A.,Zhang, Ning
, p. 5644 - 5646 (2007/10/03)
The synthesis of coumestrol has been achieved in five steps from 1,3-dimethoxybenzene. The key step is a photochemical cyclization of a glyoxylate ester.
