189809-02-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189809-02-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,8,0 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 189809-02:
(8*1)+(7*8)+(6*9)+(5*8)+(4*0)+(3*9)+(2*0)+(1*2)=187
187 % 10 = 7
So 189809-02-7 is a valid CAS Registry Number.
189809-02-7Relevant academic research and scientific papers
α-Nitrogenated organolithium compounds from α-amidomethyl and α-aminomethyl sulfones
Alonso, Diego A.,Alonso, Emma,Najera, Carmen,Ramon, Diego J.,Yus, Miguel
, p. 4835 - 4856 (2007/10/03)
Successive reaction of α-amidomethyl sulfones 7a,b, derived from primary amides, with n-butyllithium and primary alkyl bromides (CH2 = CHCH2Br, CH2 = CMeCH2Br, CH2 = CBrCH2Br, CH ≡ CCH
