259250-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 259250-99-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,2,5 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 259250-99:
(8*2)+(7*5)+(6*9)+(5*2)+(4*5)+(3*0)+(2*9)+(1*9)=162
162 % 10 = 2
So 259250-99-2 is a valid CAS Registry Number.
259250-99-2Relevant academic research and scientific papers
Mono alkylation of γ,δ-unsaturated β-oxo esters via dianions. Part I
Goorbergh, J. A. M. van den,Gen, A. van der
, p. 393 - 399 (2007/10/02)
γ,δ-Unsaturated β-oxo esters can be converted into their dianions 6 by reaction with 2 equivalents of lithium diisopropylamide (LDA).Reaction of these dianions with alkyl halides leads exclusively to mono-γ-alkylation and affords the unsaturated oxo ester
