97580-69-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97580-69-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,5,8 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97580-69:
(7*9)+(6*7)+(5*5)+(4*8)+(3*0)+(2*6)+(1*9)=183
183 % 10 = 3
So 97580-69-3 is a valid CAS Registry Number.
97580-69-3Relevant academic research and scientific papers
AN ELEGANT SYNTHESIS OF 6H-BENZOFUROBENZOPYRAN-6-ONES
Singh, Rishi Pal,Singh, Daljeet
, p. 903 - 907 (2007/10/02)
Etherification of 4-hydroxy-2H-1-benzopyran-2-ones with 2-bromocyclohexan-1-one and cyclization with PPA followed by dehydrogenation with DDQ affords 6H-benzofurobenzopyran-6-ones in overall good yield.
