117457-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117457-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,4,5 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117457-81:
(8*1)+(7*1)+(6*7)+(5*4)+(4*5)+(3*7)+(2*8)+(1*1)=135
135 % 10 = 5
So 117457-81-5 is a valid CAS Registry Number.
117457-81-5Relevant articles and documents
Reactions of substituted 5-nitro-3-furoylthioureas
Stetinova, Jarmila,Lojkaskova, Martina,Dandarova, Miloslava,Lesko, Jan,Kada, Rudolf
, p. 305 - 312 (2007/10/03)
Some cyclization and cyclocondensation reactions of 1-(5-nitro-3-furoyl)-3-(4-R-phenyl)thioureas 1a-1e (R = H, CH3, N(C2H5)2, CN) were conducted. 6-R-2-(5-Nitro-3-furoylamino)benzothiazoles 2a-2c (R = H, CH