221910-49-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221910-49-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,9,1 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 221910-49:
(8*2)+(7*2)+(6*1)+(5*9)+(4*1)+(3*0)+(2*4)+(1*9)=102
102 % 10 = 2
So 221910-49-2 is a valid CAS Registry Number.
221910-49-2Relevant academic research and scientific papers
A convenient synthesis of 3-phenylthio-azetidin-2-ones
Bari,Sharma,Sethi
, p. 1114 - 1119 (2007/10/03)
3-Phenylthio-4,4-diethoxycarbonyl-azetidin-2-ones 8 have been conveniently synthesised by reacting 2-chlorophenylthioacetyl chloride 5 with aryl substituted aminomalonates 7 under mild basic conditions. Alternatively, C-3 alkylation of azetidin-2-one usin
