881894-74-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 881894-74-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,1,8,9 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 881894-74:
(8*8)+(7*8)+(6*1)+(5*8)+(4*9)+(3*4)+(2*7)+(1*4)=232
232 % 10 = 2
So 881894-74-2 is a valid CAS Registry Number.
881894-74-2Relevant academic research and scientific papers
Aromatic oligoureas: Enforced folding and assisted cyclization
Zhang, Aimin,Han, Yaohua,Yamato, Kazuhiro,Zeng, Xiao Cheng,Gong, Bing
, p. 803 - 806 (2007/10/03)
Aromatic oligoureas are forced into well-defined conformation by incorporated intramolecular hydrogen bonds. Shape-persistent tetraureas macrocycles were obtained in a one-step [2 + 2] reaction in good yields.
