140399-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140399-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,3,9 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 140399-63:
(8*1)+(7*4)+(6*0)+(5*3)+(4*9)+(3*9)+(2*6)+(1*3)=129
129 % 10 = 9
So 140399-63-9 is a valid CAS Registry Number.
140399-63-9Relevant academic research and scientific papers
ACYLPHOSPHONIUM COMPOUNDS OF COUMARIN
Yagodinets, P. I.,Skripskaya, O. V.,Chernyuk, I. N.,Shevchuk, M. I.
, p. 1714 - 1719 (2007/10/02)
The reaction of 3-(ω-bromoacetyl)coumarin with triphenylphosphine gives 3-coumarinocarbomethyltriphenylphosphonium bromide.The corresponding phoshorylide reacts readily with aldehydes to form coumarin analogs of chalcones.The acetylphosphonium salt and th
