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17716-46-0

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17716-46-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17716-46-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,7,1 and 6 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17716-46:
(7*1)+(6*7)+(5*7)+(4*1)+(3*6)+(2*4)+(1*6)=120
120 % 10 = 0
So 17716-46-0 is a valid CAS Registry Number.

17716-46-0Relevant articles and documents

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Igeta et al.

, p. 622 (1973)

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Preparation method of 2-aminoazo aromatic compound

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Paragraph 0011, (2018/09/21)

The invention relates to a preparation method of 2-aminoazo aromatic compound. The 2-aminoazo aromatic compound is prepared by enabling an azo aromatic compound of a structure which is as shown in theformula I and amine to react; the reaction process comprises the following steps: directly adding the azo aromatic compound, the amine, a catalyst and a solvent into a reacting device, wherein the catalyst is copper acetate, the solvent is benzene, or dimethylbenzene and a mixture of the benzene or the dimethylbenzene, and the molar using amount of azobenzene is 1 to 3 times that of the amine; stirring and heating to the temperature of 100 to 130 DEG C, reacting for 24 hours, and separating a product to obtain the 2-aminoazo aromatic compound. The preparation method provided by the inventionis simple in synthesis route, low in raw material cost and high in yield.

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