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(E)-dimethyl 2-fluoro 2-butene dioate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74398-85-9

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74398-85-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74398-85-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,9 and 8 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74398-85:
(7*7)+(6*4)+(5*3)+(4*9)+(3*8)+(2*8)+(1*5)=169
169 % 10 = 9
So 74398-85-9 is a valid CAS Registry Number.

74398-85-9Downstream Products

74398-85-9Relevant academic research and scientific papers

The formation of halogenated succinates by liquid-phase direct fluorination with elemental fluorine

Syvret, Robert G.,Vassilaros, Daniel L.,Parees, David M.,Pez, Guido P.

, p. 277 - 282 (1994)

Direct fluorination of maleic anhydride with elemental fluorine has been investigated in different solvents at low temperatures.It was discovered that the net conversion of maleic anhydride, as well as the overall yield and composition of the halogenated products, depend strongly on the experimental conditions employed.Fluorinations conducted in fluorotrichloromethane, chloroform or mixtures thereof, in the presence of sodium fluoride, resulted in good yields of halogenated succinic acid derivatives: the predominant products being 2,3-dihalogenated succinic acids.Product distributions varied widely between experiments conducted at 0 deg C and -25 deg C, and also between experiments conducted in neat CHCl3 and in CFCl3/CHCl3 mixtures.Experimental details and some comments regarding the stereoselectivity of halogen addition are provided.

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