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3a-phenyl-3a,4,5,6-tetrahydrobenzofuran-2(3H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

34219-61-9

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34219-61-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34219-61-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,1 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 34219-61:
(7*3)+(6*4)+(5*2)+(4*1)+(3*9)+(2*6)+(1*1)=99
99 % 10 = 9
So 34219-61-9 is a valid CAS Registry Number.

34219-61-9Relevant academic research and scientific papers

HEXAHYDROINDOLES AND TETRAHYDRO-1H-1-PYRINDINES: ALTERNATIVE FORMATION FROM 5-CARBOXAMIDOPENTANOIC ACIDS AND PROOF OF STRUCTURES

Metz, Gunter

, p. 4101 - 4124 (2007/10/02)

Under mild temperatures the 3-acetyl-3-aryl-5-carboxamidopentanoic acids 1 (Ar=phenyl or dimethoxyphenyl) easily undergo cyclisation in sulfuric acid or polyphosphoric acid (PPA) to the bicyclic lactamlactones 2.Surprisingly different lactams were obtaine

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