91735-49-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91735-49-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,3 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91735-49:
(7*9)+(6*1)+(5*7)+(4*3)+(3*5)+(2*4)+(1*9)=148
148 % 10 = 8
So 91735-49-8 is a valid CAS Registry Number.
91735-49-8Relevant academic research and scientific papers
An Improved Synthesis of Benzoyl-chromans and Chromenes
Ahluwalia, V. K.,Singh, Raj P.,Singh, Rishi P.
, p. 42 - 45 (2007/10/02)
Direct nuclear isoprenylation of polyhydroxybenzophenones with 2-methylbut-1,3-diene (isoprene) in the presence of orthophosphoric acid results exclusively in the formation of benzoylchromans in good yields.These benzoylchromans on dehydrogenation with DD
