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2,3-diethynyl-1-trideuteriomethoxybenzene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

874758-24-4

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874758-24-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 874758-24-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,4,7,5 and 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 874758-24:
(8*8)+(7*7)+(6*4)+(5*7)+(4*5)+(3*8)+(2*2)+(1*4)=224
224 % 10 = 4
So 874758-24-4 is a valid CAS Registry Number.

874758-24-4Relevant articles and documents

Ortho effect in the Bergman cyclization: Interception of p-benzyne intermediate by intramolecular hydrogen abstraction

Zeidan, Tarek A.,Manoharan, Mariappan,Alabugin, Igor V.

, p. 954 - 961 (2007/10/03)

Intramolecular hydrogen atom (H-atom) abstraction from the o-OCH 3 group effectively intercepts the p-benzyne intermediate in the Bergman cycloaromatization of 2,3-diethynyl-1-methoxybenzene (1) before this intermediate undergoes either retro-Bergman ring opening or external H-atom abstraction. This process leads to the formation of a new diradical and renders the cyclization step essentially irreversible. Chemical and kinetic consequences of this phenomenon were investigated through the combination of computational and experimental studies.

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