141921-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 141921-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,9,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 141921-83:
(8*1)+(7*4)+(6*1)+(5*9)+(4*2)+(3*1)+(2*8)+(1*3)=117
117 % 10 = 7
So 141921-83-7 is a valid CAS Registry Number.
141921-83-7Relevant articles and documents
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.
