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52055-86-4

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52055-86-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52055-86-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,0,5 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 52055-86:
(7*5)+(6*2)+(5*0)+(4*5)+(3*5)+(2*8)+(1*6)=104
104 % 10 = 4
So 52055-86-4 is a valid CAS Registry Number.

52055-86-4Relevant articles and documents

Preparation method and application of pongamol

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Paragraph 0008; 0089; 0096-0097, (2019/10/01)

The invention belongs to the field of medicinal chemistry, and relates to a preparation method and application of pongamol. The preparation method comprises the following steps: with 1,3-cyclohexanedione (6) as a starting raw material, carrying out a cyclization reaction to obtain 6,7-dihydro-4-(5H)-benzofuranone (7); carrying out acylation reaction on the compound (7) to obtain 5-acetyl-6,7-dihydro-4-(5H)-benzofuranone (8); carrying out dehydrogenation reaction on the compound (8) to obtain 1-(4-hydroxy-5-benzofuryl) ethyl ketone (3); carrying out methylation reaction on the compound (3) to obtain 1-(4-methoxy-5-benzofuryl) ethyl ketone (4); and condensing the compound (4) with benzoyl chloride to obtain the pongamol. According to the preparation method, the selected reagents are cheap and easy to obtain, the post-treatment method is simple, the reaction conditions are mild, and the product yield is high. Pharmacological activity experiments show that the synthesized compound has nerve injury resistance and anti-inflammatory activity, which means that the compound has a good application prospect in the field of treatment of nerve injury and inflammation related diseases.

Amberlyst 15-catalyzed efficient synthesis of 5-acetyl-4-hydroxy-coumarone and 5-acetyl-6-hydroxy-coumarone: Crucial precursors for several naturally occurring furanoflavones

Goel, Atul,Dixit, Manish

, p. 1990 - 1994 (2007/10/03)

A novel approach to the total synthesis of naturally occurring furanoflavones and furanochalcones is described. Angular and linear furanoflavones and furanochalcones have been prepared in just four steps, using economical reagents and simple reaction cond

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