23343-03-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23343-03-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,3,4 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23343-03:
(7*2)+(6*3)+(5*3)+(4*4)+(3*3)+(2*0)+(1*3)=75
75 % 10 = 5
So 23343-03-5 is a valid CAS Registry Number.
23343-03-5Relevant academic research and scientific papers
Natural Benzofuranes. Synthesis of Eupomatenoids-1, -3, -4, -5, -6, -7, and -13
McKittrick, Brian A.,Stevenson, Robert
, p. 475 - 482 (2007/10/02)
A group of eupomatenoids, natural lignans possessing 2-aryl-3-methyl-5-propenylbenzofuran structures have been synthesized by short pathways which include the intramolecular Wittig reaction of an o-bromoethylaryl benzoate ester as a key step.
