116523-93-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 116523-93-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,5,2 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 116523-93:
(8*1)+(7*1)+(6*6)+(5*5)+(4*2)+(3*3)+(2*9)+(1*3)=114
114 % 10 = 4
So 116523-93-4 is a valid CAS Registry Number.
116523-93-4Relevant articles and documents
Synthesis of 2-Aroylimino-6-aryl-1,3,4-oxadiazolo-1,2,4-thiadiazolines
Ramachandraiah, G.,Reddy, K. Kondral
, p. 185 - 186 (2007/10/02)
Cyclisation of N1-aroyl-N2-(5-aryl-1,3,4-oxadiazol-2-yl)thioureas (IV) in the presence of PCl5 and POCl3 is shown to afford 2-aroylimino-6-aryl-1,3,4-oxadiazolo-1,2,4-thiadiazolines (V), instead of the expected 2,5-diaryl-1,3,4-oxadiazolo-s-triazines-7-thiones (III).
