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1219819-24-5

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1219819-24-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1219819-24-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,8,1 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1219819-24:
(9*1)+(8*2)+(7*1)+(6*9)+(5*8)+(4*1)+(3*9)+(2*2)+(1*4)=165
165 % 10 = 5
So 1219819-24-5 is a valid CAS Registry Number.

1219819-24-5Downstream Products

1219819-24-5Relevant articles and documents

Synthetic method of 9-O-substituted phenoxyl alkyl berberine derivative

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Paragraph 0019; 020; 0021, (2019/01/08)

The invention discloses a synthetic method of a 9-O-substituted phenoxyl alkyl berberine derivative. The method comprises the following steps: by taking tetrabutylammonium bromide as a phase transfercatalyst and DMF (Dimethyl Formamide) as a solvent, first, carrying out a reaction on alpha, omega-dibromo alkane and phenol to synthesize bromoalkyl phenyl ether; then carrying out a reaction directly with berberrubine at 80 DEG C for 4 hours; after reaction, pouring the mixture into ice water while being hot, cooling the mixture to separate out a solid; and then carrying out filtration and recrystallization of dichloromethane and absolute methanol (V/V=10: 1) to obtain a yellow powder solid which is 9-O-substituted phenoxyl alkyl berberine derivative. Compared with a conventional method of synthesizing the 9-O-substituted phenoxyl alkyl berberine derivative, the method has the advantages of being mild in reaction condition, high in efficiency, few in byproduct, short in time, simple to operate, good in color and luster of products, high in purity and the like, and has a relatively high actual application prospect.

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