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163595-81-1

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163595-81-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163595-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,5,9 and 5 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 163595-81:
(8*1)+(7*6)+(6*3)+(5*5)+(4*9)+(3*5)+(2*8)+(1*1)=161
161 % 10 = 1
So 163595-81-1 is a valid CAS Registry Number.

163595-81-1Relevant articles and documents

Preparation method of aporphine alkaloid

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, (2021/06/09)

The invention discloses a preparation method of aporphine alkaloid as shown in a formula III. The method comprises the following steps: taking a benzaldehyde compound as shown in a formula III-0 as a raw material, and sequentially carrying out Wittig reaction, Pictet-Spengler reaction, Heck reaction and palladium carbon hydrogen deprotection. A bromine-containing benzaldehyde derivative is selected as a raw material, the carbon-carbon coupling co-production rate and the reaction rate are increased through bromine atoms, and the reaction activity is improved; benzyl chloroformate is adopted for NH protection, and an electron withdrawing group is introduced, so that the reaction yield can be improved; and a styrene methyl ether derivative directly reacts with an acylated phenylethylamine derivative in an acid catalysis system by adopting a one-pot method so as to obtain benzyl tetrahydroisoquinoline. The preparation method has the advantages of mild reaction conditions, low toxicity of used reagents, easily available raw materials, convenient post-treatment and simpler reaction route compared with previous reports, and can be suitable for various reaction substrates.

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