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1321895-41-3

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1321895-41-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1321895-41-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,1,8,9 and 5 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1321895-41:
(9*1)+(8*3)+(7*2)+(6*1)+(5*8)+(4*9)+(3*5)+(2*4)+(1*1)=153
153 % 10 = 3
So 1321895-41-3 is a valid CAS Registry Number.

1321895-41-3Downstream Products

1321895-41-3Relevant articles and documents

Total chemical synthesis method of adenine

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, (2017/08/29)

The invention relates to a total chemical synthesis method of adenine. The method comprises the following steps of: 1) dissolving primary amine in strong-acid solution, dripping sodium nitrite solution to prepare diazonium salt, adding malononitrile for dissolving, and dripping alkaline solution to regulate a pH value of reaction solution and generate coupling reaction, thereby obtaining an azo compound; 2) adding the azo compound into formamide, and introducing liquid ammonia, heating to carry out high-temperature condensation and cyclization reaction, thereby obtaining a pyrimidine-azo compound; 3) dissolving the pyrimidine-azo compound into water, adding a catalyst, and introducing hydrogen for hydrogenation, thereby obtaining 4,5,6-triamidopyrimidine; and 4) dissolving the 4, 5, 6-triamidopyrimidine into the formamide to carry out high-temperature cyclization with the formamide, thereby obtaining an adenine crude product, and after recrystallization, obtaining white crystalline powder, i.e., a high-purity refined adenine product. The total chemical synthesis method has the advantages that water is used as a solvent in the step 1), and solvents used in the steps 2), 3) and 4) can be repeatedly used, so that the 'three wastes' are fewer, and the environment-friendly effect is achieved; and the total yield is 64.75% (calculated according to the amount of malononitrile), and the cost is low, so that the industrialization is easy and the economic benefit is obvious.

Application of fluroescent triazoles to analytical chemistry. I. Determination of aromatic primary amine with 2,4,6-triaminpyrimidine as a reagent

Narita,Kitagawa,Hirai

, p. 4928 - 4934 (2007/10/02)

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One step syntheses of adenine, xanthine and guanine from phenylazomalonic acid derivatives.

Sekiya,Suzuki,Terao

, p. 1331 - 1335,1331-1333 (2007/10/05)

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