123973-58-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123973-58-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,9,7 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 123973-58:
(8*1)+(7*2)+(6*3)+(5*9)+(4*7)+(3*3)+(2*5)+(1*8)=140
140 % 10 = 0
So 123973-58-0 is a valid CAS Registry Number.
123973-58-0Relevant articles and documents
Second approach to the construction of a pentacyclic ring system for neosurugatoxin
Okada,Mizuno,Tanino,Kakoi,Inoue
, p. 1110 - 1115 (2007/10/02)
The Diels-Alder adduct obtained from (E)-6-bromo-3-ethoxycarbonylmethylene-2-oxoindoline and trans-1,3-pentadiene was successfully transformed into the diacetate of the aglycone of neosurugatoxin, which is the key intermediate in our first total synthesis