111998-65-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111998-65-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,9,9 and 8 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 111998-65:
(8*1)+(7*1)+(6*1)+(5*9)+(4*9)+(3*8)+(2*6)+(1*5)=143
143 % 10 = 3
So 111998-65-3 is a valid CAS Registry Number.
111998-65-3Relevant academic research and scientific papers
ASYMMETRIC SYNTHESIS XI : A SHORT SYNTHESIS OF THE CHIRAL PYRROLIDINE SYNTHON, 2-CYANO-5-OXAZOLOPYRROLIDINE
Royer, Jacques,Husson, Henri-Philippe
, p. 6175 - 6178 (2007/10/02)
The Robinson-Schopf condensation of dimethoxytetrahydrofuran with R(-)phenylglycinol in the presence of KCN followed by reflux in ethanol leads to the formation of 2-cyano-5-oxazolopyrrolidine 1b in 52percent overall yield.
