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3818-99-3

1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone is a complex organic compound with the molecular formula C19H24O4. It is characterized by a unique structure that includes a benzodipyran core, which is a fused ring system consisting of two pyran rings. The compound features a 5-methoxy group, which is a methoxy group (-OCH3) attached to the benzodipyran at the 5-position, and two methyl groups (-CH3) at the 2 and 8 positions of the pyran rings. The molecule also contains a ketone group (-CO-) attached to the 1-position of the ethanone (ethyl ketone) moiety. This chemical is synthesized through a series of chemical reactions and is known for its potential applications in the pharmaceutical and chemical industries, particularly as a precursor in the synthesis of various compounds. Due to its complex structure, it is typically used in research and development settings rather than in everyday applications.

3818-99-3

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  • 1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone

    Cas No: 3818-99-3

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3818-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3818-99-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,8,1 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3818-99:
(6*3)+(5*8)+(4*1)+(3*8)+(2*9)+(1*9)=113
113 % 10 = 3
So 3818-99-3 is a valid CAS Registry Number.

3818-99-3Downstream Products

3818-99-3Relevant articles and documents

Convenient Synthesis of Alloevodione, Alloevodionol and Franklinone

Ahluwalia, V. K.,Jain, Anjula,Goyal, Madhuri

, p. 166 - 167 (2007/10/02)

3,4-Dihydro-6-hydroxy-5,7-dimethoxy-2,2-dimethyl-2H-1-benzopyran (5), obtained by nuclear prenylation of 2,6-dimethoxyquinol, on methylation followed by Friedel-Crafts acetylation gives 8-acetyl-3,4-dihydro-7-hydroxy-5,6-dimethoxy-2,2-dimethyl-2H-1-benzopyran (7).Dehydrogenation of 7 with DDQ followed by methylation affords alloevodione (9).Similar isoprenylation of 2,6-dihydroxy-4-methoxyacetophenone gives a mixture of dichroman (10) and the monochroman (11).Dehydrogenation of 10 and 11 furnishes franklinone (3) and alloevodionol (1) respectively.

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