76421-27-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76421-27-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,4,2 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 76421-27:
(7*7)+(6*6)+(5*4)+(4*2)+(3*1)+(2*2)+(1*7)=127
127 % 10 = 7
So 76421-27-7 is a valid CAS Registry Number.
76421-27-7Relevant articles and documents
Alkylation and Subsequent Decomposition of Arenesulfonylhydrazone Dianions
Bond, Thomas F.,DiPietro, Richard A.
, p. 1315 - 1318 (2007/10/02)
Trisyl- or tosylhydrazones of a variety of ketones containing an α-methylene group have been converted into dianions by treatment alkyllithium bases at -78 deg C.Alkylation of these dianions with 1-iodobutane occurs readily and can be followed by a second