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90220-25-0

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90220-25-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90220-25-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,2 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90220-25:
(7*9)+(6*0)+(5*2)+(4*2)+(3*0)+(2*2)+(1*5)=90
90 % 10 = 0
So 90220-25-0 is a valid CAS Registry Number.

90220-25-0Relevant articles and documents

Synthesis of Sulfones and Sulfonyl Derivatives using Sodium (tert-butyldimethylsilyl)oxymethanesulfinate

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Paragraph 0982; 0990-0993, (2021/04/29)

The present invention relates to a method for manufacturing a sulfone and sulfonyl derivative compound using sodium (tert-butyldimethylsilyl)oxymethanesulfinate, which is a novel organic sulfin salt, wherein the novel organic sulfin salt has good stability, environmental friendliness and economy, and is easy to handle, and thus significantly reduces the amount of transition metal catalysts and the amount of organic sulfin salts used when introducing aryl or alkenyl. Also, alkylation, arylation, amination, and fluorination are all possible during secondary functionalization. Therefore, the present invention can be usefully used in preparation and mass production of various kinds of sulfones and derivatives thereof including asymmetric sulfone derivatives.

A Versatile Reagent and Method for Direct Aliphatic Sulfonylation

Shavnya, Andre,Hesp, Kevin D.,Tsai, Andy S.

supporting information, p. 1768 - 1774 (2018/03/21)

An efficient methodology has been developed for the two-step synthesis of aliphatic sulfinate salts, sulfonamides, sulfonyl fluorides, and unsymmetrical sulfones on the basis of alkylation of a new versatile sulfonylating reagent. The new reagent is easily accessible in one step; the developed protocols are conducted under mild conditions and have a broad substrate scope. (Figure presented.).

Arylalkane-sulfonamides having endothelin-antagonist activity

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, (2008/06/13)

The invention relates to novel aryl-alkane-sulfonamides and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as endothelin receptor antagonists.

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