277752-62-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 277752-62-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,7,7,5 and 2 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 277752-62:
(8*2)+(7*7)+(6*7)+(5*7)+(4*5)+(3*2)+(2*6)+(1*2)=182
182 % 10 = 2
So 277752-62-2 is a valid CAS Registry Number.
277752-62-2Relevant articles and documents
Enantiospecific, stereospecific total synthesis of the oxindole alkaloid alstonisine
Wearing, Xiangyu Z.,Cook, James M.
, p. 4237 - 4240 (2007/10/03)
(equation presented) The total synthesis of alstonisine was accomplished in enantiospecific fashion in an overall yield of 12% (from tryptophan methyl ester) in 17 reaction vessels. The structure of alstonisine (1) has been determined by NOE spectroscopic