91664-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91664-23-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,6 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91664-23:
(7*9)+(6*1)+(5*6)+(4*6)+(3*4)+(2*2)+(1*3)=142
142 % 10 = 2
So 91664-23-2 is a valid CAS Registry Number.
91664-23-2Relevant academic research and scientific papers
A FACILE SYNTHESIS OF CROTYLACETOPHENONES AND ACETYL SUBSTITUTED 2-METHYLCHROMANS
Ahluwalia, V. K.,Singh, Manjula,Singh, R. P.
, p. 126 - 138 (2007/10/02)
Condensation of hydroxyacetophenones with but-1,3-diene has been achieved in presence of orthophosphoric acid leading to the formation of crotyl acetophenones which were cyclised to the corresponding 2-methylchromans.
