267651-25-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 267651-25-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,7,6,5 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 267651-25:
(8*2)+(7*6)+(6*7)+(5*6)+(4*5)+(3*1)+(2*2)+(1*5)=162
162 % 10 = 2
So 267651-25-2 is a valid CAS Registry Number.
267651-25-2Relevant academic research and scientific papers
A tyrosine-derived benzofuranone related to diazonamide A.
Vedejs,Wang
, p. 1031 - 1032 (2007/10/03)
[formula: see text] Cyclization of 8 with PPA followed by MCPBA oxidation affords the benzofuranone 10. Treatment with a chiral chloroformate in the presence of DMAP affords the target benzofuranone 13 via an enol ester 12.
