41808-13-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 41808-13-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,8,0 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 41808-13:
(7*4)+(6*1)+(5*8)+(4*0)+(3*8)+(2*1)+(1*3)=103
103 % 10 = 3
So 41808-13-3 is a valid CAS Registry Number.
41808-13-3Relevant academic research and scientific papers
Conjugated Systems Derived from Piperazine-2,5-dione
Katritzky, Alan R.,Fan, Wei-Qiang,Szajda, Maria,Li, Qiao-Ling,Caster, Kenneth C.
, p. 591 - 597 (2007/10/02)
The preparation of mono- and of symmetrical and unsymmetrical bis-ylidene derivatives of piperazine-2,5-dione is described.The uv-visible absorption of the products is correlated with acceptor/donor character of the substituents.
