142109-29-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142109-29-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,1,0 and 9 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 142109-29:
(8*1)+(7*4)+(6*2)+(5*1)+(4*0)+(3*9)+(2*2)+(1*9)=93
93 % 10 = 3
So 142109-29-3 is a valid CAS Registry Number.
142109-29-3Relevant academic research and scientific papers
New access to spiranic β-lactams
Le Blanc, Sylvie,Pete, Jean-Pierre,Piva, Olivier
, p. 1993 - 1996 (2007/10/02)
N-benzyl α,β-unsaturated γ-oxoamides undergo under irradiation intramolecular hydrogen abstraction and consecutive cyclisation leading to spiranic β-lactams; Extension of the reaction to one spiranic oxapenam is also reported.
