133785-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133785-56-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,8 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 133785-56:
(8*1)+(7*3)+(6*3)+(5*7)+(4*8)+(3*5)+(2*5)+(1*6)=145
145 % 10 = 5
So 133785-56-5 is a valid CAS Registry Number.
133785-56-5Relevant articles and documents
Cyclization of deprotonated 2-phenyl-1-tosylaziridine. A surprising example of an intramolecular nucleophilic aromatic addition
Breternitz,Schaumann,Adiwidjaja
, p. 1299 - 1302 (1991)
Deprotonation of 2-phenyl-1-tosylaziridine 1 with butyl lithium gives an anion that cyclizes to 4 by an intramolecular nucleophilic aromatic addition. Treatment of derivatives 5, 6 with a Gringnard reagent produces aziridines 10, 11.
