91909-94-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91909-94-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,0 and 9 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91909-94:
(7*9)+(6*1)+(5*9)+(4*0)+(3*9)+(2*9)+(1*4)=163
163 % 10 = 3
So 91909-94-3 is a valid CAS Registry Number.
91909-94-3Relevant academic research and scientific papers
Synthesis of 7-Ethoxy-3,4-dimethylcoumarin and 5-Methoxy-4-methylcoumarin
Ahluwalia, V. K.,Mehta, Vimal D.,Khanduri, C. H.
, p. 68 - 69 (2007/10/02)
The structures proposed for two new naturally occuring coumarins as 7-ethoxy-3,4-dimethylcoumarin (1a) and 5-methoxy-4-methylcoumarin (2) (isolated from Edgeworthia gardneri) have been confirmed by their syntheses.
