495416-68-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 495416-68-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,5,4,1 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 495416-68:
(8*4)+(7*9)+(6*5)+(5*4)+(4*1)+(3*6)+(2*6)+(1*8)=187
187 % 10 = 7
So 495416-68-7 is a valid CAS Registry Number.
495416-68-7Relevant articles and documents
Pummerer reaction methodology for the synthesis of 5-thiophenyl substituted oxazoles
Kreisberg, Jennifer D,Magnus, Philip,Shinde, Shirin
, p. 7393 - 7396 (2002)
Treatment of N-acylamino-2-thiophenyl derivatives with N-chlorosuccinimide (2.0 equiv.) followed by SnCl4 (0.1-1.0 equiv.) provides a direct synthesis of 5-thiophenyloxazoles.
