90834-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90834-18-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,8,3 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 90834-18:
(7*9)+(6*0)+(5*8)+(4*3)+(3*4)+(2*1)+(1*8)=137
137 % 10 = 7
So 90834-18-7 is a valid CAS Registry Number.
90834-18-7Relevant academic research and scientific papers
A Convenient Synthesis of 4-Styrylcoumarins
Joshi, U. K.,Kelkar, R. M.,Paradkar, M. V.
, p. 1151 - 1152 (2007/10/02)
The title-compounds (IIa-m) have been prepared by condensing 2'-hydroxychalcones (Ia-m) with the easily accessible Wittig reagent Ph3P=CHCOOEt.
