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124668-67-3

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124668-67-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124668-67-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,6,6 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 124668-67:
(8*1)+(7*2)+(6*4)+(5*6)+(4*6)+(3*8)+(2*6)+(1*7)=143
143 % 10 = 3
So 124668-67-3 is a valid CAS Registry Number.

124668-67-3Downstream Products

124668-67-3Relevant articles and documents

KINETICS AND MECHANISM OF REVERSIBLE, BASE-CATALYSED RING CLOSURE OF 3-(METHOXYCARBONYL)PROPIONANILIDE AND O-(METHOXYCARBONYLMETHYL)-N-PHENYLCARBAMATE

Kavalek, Jaromir,Machacek, Vladimir,Svobodova, Gabriela,Sterba, Vojeslav

, p. 1005 - 1011 (2007/10/02)

The rate constants of reversible, base-catalysed ring closure of 3-(methoxycarbonyl)propionanilide (I) and O-(methoxycarbonylmethyl)-N-phenylcarbamate (II) to 1-phenyl-2,5-pyrrolidinedione (III) and 3-phenyl-2,4-oxazolidinedione (IV), respectively, and the rates of solvolyses of the cyclization products III and IV in water and methanol have been measured.In both cases, an equilibrium is established between the starting ester and the cyclization product in methoxide solutions which is strongly shifted in favour of the starting ester.In the case of ester II in methoxidesolutions, the cyclization is followed by a much slower splitting of the cyclization product to give glycolic acid anilide.The effects of the group X=NH, CH2, O, S in the esters RNHCOXCH2COOCH3 on the rates of the cyclization and solvolysis of the cyclization products is discussed.

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