83242-49-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83242-49-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,2,4 and 2 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83242-49:
(7*8)+(6*3)+(5*2)+(4*4)+(3*2)+(2*4)+(1*9)=123
123 % 10 = 3
So 83242-49-3 is a valid CAS Registry Number.
83242-49-3Relevant academic research and scientific papers
FREE-RADICAL ANNELATION IN THE SYNTHESIS OF BICYCLIC β-LACTAMS. 3. SYNTHESIS OF 1-OXACEPHEM AND 1-OXAHOMOCEPHEM DERIVATIVES.
Bachi, Mario D.,Hoornaert, Christian
, p. 2505 - 2508 (2007/10/02)
The synthesis of tert-butyl 3-benzyl-1-oxa-Δ3-cephem-4-carboxylate (16) and other bicyclic β-lactams is described.
