717840-52-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 717840-52-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,7,8,4 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 717840-52:
(8*7)+(7*1)+(6*7)+(5*8)+(4*4)+(3*0)+(2*5)+(1*2)=173
173 % 10 = 3
So 717840-52-3 is a valid CAS Registry Number.
717840-52-3Relevant articles and documents
Novel synthesis of thieno[2,3-c]pyridazine and pyrimido[4′,5′: 4,5]thieno[2,3-c]pyridazine derivatives
El-Dean, A. M. Kamal,El-Gaby,Gaber,Eyada,Al-Kamali
, p. 413 - 424 (2007/10/03)
Novel series of thieno[2,3-c]pyridazines and pyrimido[4′,5′:4, 5] thieno-[2,3-c]pyridazines have been synthesized from the readily accessible 4-cyano-5,6-dimethylpyridazin-3(2H)-thione 3b. Copyright Taylor & Francis Inc.
