28541-44-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28541-44-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,5,4 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 28541-44:
(7*2)+(6*8)+(5*5)+(4*4)+(3*1)+(2*4)+(1*4)=118
118 % 10 = 8
So 28541-44-8 is a valid CAS Registry Number.
28541-44-8Relevant academic research and scientific papers
Synthesis of β-lactams via cycloaddition of hydrazones with phenoxyketene
Sharma,Pandhi
, p. 2196 - 2200 (2007/10/02)
Phenoxyketene is capable of annelating the disubstituted hydrazones to afford stereoselectivity cis-monocyclic β-lactams with a 1-amino functionality. The ease of cycloaddition is governed by substitutents on the azomethine carbon as well as on the hydraz
