217951-93-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217951-93-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,9,5 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 217951-93:
(8*2)+(7*1)+(6*7)+(5*9)+(4*5)+(3*1)+(2*9)+(1*3)=154
154 % 10 = 4
So 217951-93-4 is a valid CAS Registry Number.
217951-93-4Relevant academic research and scientific papers
Diisoindolothieno[2,4]diazepines via a diastereoselective N-acyliminium ion cyclization
Pigeon, Pascal,Decroix, Bernard
, p. 8659 - 8662 (2007/10/03)
A high syn stereoselectivity, of the addition of an aromatic to the cyclic N-acyliminium ions generated from hydroxylactams 3a,b,e,f leading to the thieno[2,4]diazepines 4a,b,e,f is described.
