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3H-Naphtho[2,1-b]pyran-3-one, 1,2-dihydro-1-(4-methoxybenzoyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133183-54-7

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133183-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133183-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,8 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 133183-54:
(8*1)+(7*3)+(6*3)+(5*1)+(4*8)+(3*3)+(2*5)+(1*4)=107
107 % 10 = 7
So 133183-54-7 is a valid CAS Registry Number.

133183-54-7Downstream Products

133183-54-7Relevant academic research and scientific papers

Synthesis and reactions of 1-aroyl-1, 2-dihydro-3H-naphthopyran-3-ones with nucleophilic reagents

El-Kassaby, M A,Hassan, M A,Shiba, S A,Abou-El-Regal, M M

, p. 662 - 665 (2007/10/02)

The title compounds (2), prepared by the condensation of β-aroylacrylic acids with 2-naphthol in the presence of 75percent H2SO4, react with Grignard reagents to give the corresponding tertiary alcohols (3) which on treatment with acetic anhydride gave th

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