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54917-66-7

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54917-66-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54917-66-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,1 and 7 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 54917-66:
(7*5)+(6*4)+(5*9)+(4*1)+(3*7)+(2*6)+(1*6)=147
147 % 10 = 7
So 54917-66-7 is a valid CAS Registry Number.

54917-66-7Relevant articles and documents

Preparation of 5, 6, 4 '-three hydroxy flavone-7-0-D-glucuro method

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Paragraph 0068; 0069, (2017/02/24)

The invention relates to the field of drug synthesis and discloses a method for preparing 5,6,4'-trihydroxy flavone-7-0-D-glucuronic acid. The method is characterized by taking 5,6,7,4'-tetrahydroxy flavone as a raw material, adopting a brand-new syntheti

METHOD FOR PREPARING 5,6,4'-TRIHYDROXYFLAVONE-7-0-D-GLUCURONIC ACID

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Paragraph 0048, (2015/03/13)

The present invention relates to the field of drug synthesis. Disclosed is a method for preparing 5,6,4'-trihydroxyflavone-7-O-D-glucuronic acid. The method for preparing 5,6,4'-trihydroxyflavone-7-O-D-glucuronic acid of the present invention uses 5,6,7,4'-tetrahydroxyflavone as a raw material and adopts a new synthetic route to obtain high-purity 5,6,4'-trihydroxyflavone-7-O-D-glucuronic acid through an acylation reaction, a glycosylation reaction, and two-step hydrolysis. The preparing method of the present invention has a short synthetic route, low cost, and high reaction yield, the product is easy for purification, and the method is applicable to industrial production of 5,6,4'-trihydroxyflavone-7-O-D-glucuronic acid.

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