169889-13-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 169889-13-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,8,8 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 169889-13:
(8*1)+(7*6)+(6*9)+(5*8)+(4*8)+(3*9)+(2*1)+(1*3)=208
208 % 10 = 8
So 169889-13-8 is a valid CAS Registry Number.
169889-13-8Relevant articles and documents
Novel synthesis of β-halo-α,β-unsaturated ketones
Kress,Kishi
, p. 4583 - 4584 (1995)
Novel methods have been developed for the transformation of unsymmetrical 1,3-diketones to β-halo-α,β-unsaturated ketones. These new methods complement known syntheses of this functional group, allowing efficient access to a previously unattainable regioisomer.
