89691-19-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89691-19-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,6,9 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 89691-19:
(7*8)+(6*9)+(5*6)+(4*9)+(3*1)+(2*1)+(1*9)=190
190 % 10 = 0
So 89691-19-0 is a valid CAS Registry Number.
89691-19-0Relevant academic research and scientific papers
Concise Syntheses of 4-(Arylcarbonylmethyl)-azetidin-2-ones and Related Systems
Barrett, Anthony G. M.,Quayle, Peter
, p. 1076 - 1077 (2007/10/02)
On catalysis by trimethylsilyl trifluoromethanesulphonate, 4-acetoxy-1-trimethylsilylazetidin-2-one reacted with the enol silanes to give the β-lactams CH(R1)COR2> in excellent yields (71 to 95percent).
