119889-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 119889-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,8,8 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 119889-05:
(8*1)+(7*1)+(6*9)+(5*8)+(4*8)+(3*9)+(2*0)+(1*5)=173
173 % 10 = 3
So 119889-05-3 is a valid CAS Registry Number.
119889-05-3Relevant academic research and scientific papers
HIGHLY DIASTEREOSELECTIVE INTRAMOLECULAR NITRONE CYCLOADDITIONS TO Α,Β-UNSATURATED ESTERS
Annunziata, Rita,Cinquini, Mauro,Cozzi, Franco,Raimondi, Laura
, p. 2881 - 2884 (2007/10/02)
Intramolecular cycloaddition of chiral α-acyloxynitrones to in situ generated α,β-unsaturated esters occurs with very high diastereoselectivity to afford useful precursors for the synthesis of β-lactam antibiotics.
