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5703-91-3

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5703-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5703-91-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,0 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5703-91:
(6*5)+(5*7)+(4*0)+(3*3)+(2*9)+(1*1)=93
93 % 10 = 3
So 5703-91-3 is a valid CAS Registry Number.

5703-91-3Relevant articles and documents

Intermediate of cyanate monomer and preparation method thereof

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Paragraph 0078-0086; 0087-0095; 0108-0116; 0134-0142, (2019/01/17)

The invention relates to the technical field of cyanate resin, in particular to an intermediate of a cyanate monomer and a preparation method thereof. The invention provides the intermediate of the cyanate monomer in the first aspect, and the intermediate

Synthesis of diacetals from aldehydes and ketones with pentaerythritol catalyzed by silica sulfate under microwave irradiation

Jin, Tong-Shou,Wang, Huan-Xin,Wang, Kai-Fang,Li, Tong-Shuang

, p. 2993 - 2999 (2007/10/03)

The synthesis of diacetals from pentaerythritol with aldehydes and ketones is carried out under microwave irradiation in 80-98% yields with silica sulfate as catalyst.

New applications of solid silica chloride (SiO2-Cl) in organic synthesis. Efficient preparation of diacetals of 2,2-bis(hydroxymethyl)-1,3-propanediol from different substrates and their transthioacetalization reactions. Efficient regeneration of carbonyl compounds from acetals and acylals

Firouzabadi, Habib,Iranpoor, Nasser,Hazarkhani, Hassan

, p. 2847 - 2858 (2007/10/03)

A new application of solid silica chloride, an easily available and efficient catalyst for the preparation of diacetal of 2,2-bis-(hydroxymethyl)-1,3-propanediol from aldehydes, acetals, acylals, and oximes, is described. Transthioacetalization of diacetals of 2,2-bis-(hydroxymethyl)-1,3-propanediol into their corresponding 1,3-dithianes and 1,3-dithiolanes in the presence of silica chloride is presented. Efficient regeneration of carbonyl compounds from their corresponding acetals, ketals, diacetals, and acylals in the presence of this catalyst also is described.

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