120633-57-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 120633-57-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,6,3 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 120633-57:
(8*1)+(7*2)+(6*0)+(5*6)+(4*3)+(3*3)+(2*5)+(1*7)=90
90 % 10 = 0
So 120633-57-0 is a valid CAS Registry Number.
120633-57-0Relevant articles and documents
C-H insertion method for the chiral tertiary alcohol: Formal synthesis of (-)-frontalin
Ohira, Susumu,Ishi, Satoshi,Shinohara, Koji,Nozaki, Hiroshi
, p. 1039 - 1040 (2007/10/02)
Intramolecular insertion of the alkylidene carbene into C - H bond adjacent to the protected secondary hydroxyl group gave a chiral tertiary alcohol derivative, which was converted to a synthetic intermediate of (-)-frontalin.