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67723-13-1

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67723-13-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67723-13-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,7,2 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 67723-13:
(7*6)+(6*7)+(5*7)+(4*2)+(3*3)+(2*1)+(1*3)=141
141 % 10 = 1
So 67723-13-1 is a valid CAS Registry Number.

67723-13-1Downstream Products

67723-13-1Relevant articles and documents

Sequential C-S and S-N Coupling Approach to Sulfonamides

Chen, Kai,Chen, Wei,Han, Bing,Chen, Wanzhi,Liu, Miaochang,Wu, Huayue

supporting information, p. 1841 - 1845 (2020/03/04)

A one-pot three-component reaction involving nitroarenes, (hetero)arylboronic acids, and potassium pyrosulfite leading to sulfonamides was described. A broad range of sulfonamides bearing different reactive functional groups were obtained in good to excellent yields through sequential C-S and S-N coupling that does not require metal catalysts.

COMPOUNDS FOR USING IN IMAGING AND PARTICULARLY FOR THE DIAGNOSIS OF NEURODEGENERATIVE DISEASES

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Paragraph 0833; 0834, (2019/07/23)

The invention relates to compounds of formula (II) for using in imaging and particularly for the diagnosis of neurodegenerative diseases

Sulfonyl imide or sulfonamide of the denitrification arylation method and product and application

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Paragraph 0066-0073, (2019/03/31)

A sulfonyl imide or sulfonamide of the denitrification arylation method and product and application, sulfonimide or sulfonamide of the denitrification arylation method, comprises the following steps: to arylhydrazine and sulfonyl imide or sulfonamide as raw material, the catalyst palladium salt, alkali, solvent and oxidizing agent in the presence of, prepared N - aryl sulfonyl imide or N - aryl sulfonamides. The sulfonimide or sulfonamide of the denitrification arylation method, by adopting the arylhydrazine and sulfonimide or sulfonamide as raw materials used to prepare N - aryl sulfonyl imide or N - aryl sulfonamides, arylhydrazine because of having low cost, high reactivity and easy accessibility and the like, can make the sulfonyl imide or a sulfonamide for the arylation of the method cost is relatively low. The arylhydrazine as aryl group donor, the reaction by-product is N2 And H2 O, so it has the characteristics of green and environmental protection.

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