421598-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 421598-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,1,5,9 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 421598-91:
(8*4)+(7*2)+(6*1)+(5*5)+(4*9)+(3*8)+(2*9)+(1*1)=156
156 % 10 = 6
So 421598-91-6 is a valid CAS Registry Number.
421598-91-6Relevant articles and documents
Asymmetric conjugate additions to chiral α,β-unsaturated oxazolines with sulfonyl carbanions
Basil, Laura F,Meyers,Hassner
, p. 207 - 213 (2002)
Addition of sulfonyl carbanions with or without an electrophilic tether has been shown, under certain conditions, to add to α,β-unsaturated oxazolines in good yields and high de's. When 4-bromobutylsulfonyl carbanions are added to unsaturated oxazolines,