183430-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183430-21-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,4,3 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 183430-21:
(8*1)+(7*8)+(6*3)+(5*4)+(4*3)+(3*0)+(2*2)+(1*1)=119
119 % 10 = 9
So 183430-21-9 is a valid CAS Registry Number.
183430-21-9Relevant articles and documents
Michael addition of 1,3-dicarbonyl compounds with etacrynic acid
Goerlitzer,Diers
, p. 704 - 707 (2007/10/03)
The product 2, formed by Michael addition of ethyl acetoacetate with etacrynic acid (1) yields the cyclohexenone 3 by acidic hydrolysis. Compared 3 is also obtained by heating 1 with acetylacetone and sodium ethanolate. Compound 3 reacts with pyridinium b