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3,4-Dihydro-4,4-dimethyl-1-phenyl-1H-benzo[c]pyran is a chemical compound belonging to the class of benzopyrans, which are derivatives of the benzopyran heterocyclic ring system. This specific compound features a dihydrobenzopyran core with a phenyl group attached to the 1-position and two methyl groups at the 4-position. It is characterized by its molecular formula C17H18O and a molecular weight of 238.32 g/mol. The compound is known for its potential applications in the synthesis of various pharmaceuticals and agrochemicals, particularly as a precursor in the production of certain flavonoids and other biologically active compounds. Its chemical structure and properties make it a valuable intermediate in organic synthesis, highlighting its importance in the development of new drugs and chemical products.

1962-28-3

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1962-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1962-28-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,6 and 2 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1962-28:
(6*1)+(5*9)+(4*6)+(3*2)+(2*2)+(1*8)=93
93 % 10 = 3
So 1962-28-3 is a valid CAS Registry Number.

1962-28-3Relevant academic research and scientific papers

Syntheses, structure analyses, and reactions of 1,3,5-trioxepanes and related compounds

McCullough, Kevin J.,Masuyama, Araki,Morgan, Keith M.,Nojima, Masatomo,Okada, Yuji,Satake, Syuzo,Takeda, Shin-Ya

, p. 2353 - 2362 (2007/10/03)

Acid-catalysed condensations of 1,5- or 1,6-dicarbonyl compounds with ethylene glycol give 1,3,5-trioxepane derivatives as a result of neighbouring participation by the adjacent carbonyl group during the acetalization process. With trimethylene glycol, the related 1,3,5-trioxocanes have also been obtained. Reaction of the 1,3,5-trioxepanes with (a) Grignard reagents gives dialkyl-substituted cyclic ethers, (b) titanium tetrachloride-allyltributyltin gives diallyl-substituted cyclic ethers and (c) triethylsilane in the presence of trimethylsilyl triflate provides the corresponding cyclic ethers.

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