7197-62-8 Usage
General Description
1,1-Spirobiindan is a chemical compound that belongs to the spiro compound family. It is a polycyclic aromatic hydrocarbon with a unique spiro structure, consisting of two indane units connected at their 1-positions. 1,1-Spirobiindan exhibits interesting physical and chemical properties, including high thermal stability and fluorescence. It is widely used in organic synthesis and material science, particularly in the production of advanced polymers, liquid crystals, and organic semiconductors. Its unique structure and versatile properties make 1,1-Spirobiindan an important component in various industrial applications and research fields.
Check Digit Verification of cas no
The CAS Registry Mumber 7197-62-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,1,9 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 7197-62:
(6*7)+(5*1)+(4*9)+(3*7)+(2*6)+(1*2)=118
118 % 10 = 8
So 7197-62-8 is a valid CAS Registry Number.
7197-62-8Relevant articles and documents
Synthesis of spirobiindanes via bis-cyclization reaction of the 1,5-diaryl-3-pentanones catalyzed by heteropoly acids
Lan, Kun,Shan, Zixin,Fan, Shao
, p. 4343 - 4345 (2007/10/03)
Bis-cyclization reaction of the 1,5-diaryl-3-pentanones catalyzed by heteropoly acids (HPAs) was examined for the first time, and a series of spirobiindanes were synthesized. 1,5-Diaryl-3-pentanones were refluxed and dehydrated in toluene in the presence of 0.15 equiv of a heteropoly acid to furnish spirobiindanes in moderate to high yield. For the known 4,4′-dibromo-7,7′-dimethoxy-1,1′-spirobiindane, the yield was upgraded from 66% to 80%.
