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C11H11NO4(18)O is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

54840-56-1

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54840-56-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54840-56-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,8,4 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 54840-56:
(7*5)+(6*4)+(5*8)+(4*4)+(3*0)+(2*5)+(1*6)=131
131 % 10 = 1
So 54840-56-1 is a valid CAS Registry Number.

54840-56-1Upstream product

54840-56-1Downstream Products

54840-56-1Relevant academic research and scientific papers

Electron-impact induced fragmentation of labeled 3-(m-nitrobenzoyl)-2-methylpropanoic acids. Evidence for a stepwise McLafferty rearrangement

Breijer,Buurmans,Van De Graaf,Schuijl,Kieboom

, p. 2797 - 2799 (1974)

The mass spectra of deuterium and 18O labeled 3-(m-nitrobenzoyl)-2-methylpropanoic acid reveal that the McLafferty rearrangement and the rearrangement process leading to protonated m-nitrobenzoic acid do not take place via a common intermediate. H-D exchange phenomena point to a stepwise McLafferty rearrangement.

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