83933-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83933-41-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,3 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83933-41:
(7*8)+(6*3)+(5*9)+(4*3)+(3*3)+(2*4)+(1*1)=149
149 % 10 = 9
So 83933-41-9 is a valid CAS Registry Number.
83933-41-9Relevant academic research and scientific papers
Synthesis of β-Lactams from Imines and 1-Lithio-oxy-2-phenylacetylene
Barrett, Anthony G. M.,Quayle, Peter
, p. 2193 - 2196 (2007/10/02)
The ynolate 1-lithio-oxy-2-phenylacetylene, prepared from 3,4-diphenylisoxazole and n-butyl-lithium in tetrahydrofuran at -78 deg C, condensed with the electron deficient imines (R1N=CH2R2) to give the β-lactams (R1 = C6H4NO2-
