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(Z)-3,4-dimethyl-5-<4-methylphenyl(2H)methylene>-3-pyrrolin-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

61839-60-9

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61839-60-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 61839-60-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,8,3 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 61839-60:
(7*6)+(6*1)+(5*8)+(4*3)+(3*9)+(2*6)+(1*0)=139
139 % 10 = 9
So 61839-60-9 is a valid CAS Registry Number.

61839-60-9Downstream Products

61839-60-9Relevant academic research and scientific papers

Reactivity of Pyrrole Pigments, 4. Part: Deuteration of 5-Arylmethylene-3-pyrrolin-2-ones with d1-Trifluoroacetic Acid

Ribo, Josep M.,Trull, Francesc R.

, p. 1087 - 1096 (1983)

5-Arylmethylene-3,4-dimethyl-3-pyrrolin-2-ones on treatment with d1-trifluoroacetic acid (d1-TFA) undergo deuterium substitution at the carbon atom of the methylene bridge.This electrophilic substitution is related to similar deuteration reactions of verdins (bilatrienes-a,b,c).The results obtained can be interpreted by a free energy relationship, assuming that the field effect, becomes negligible by the influence of TFA. - Keywords: Bile pigments; Deuteration; Trifluoroacetic acid; Field effect; FMMF method

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