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31350-39-7

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31350-39-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31350-39-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,3,5 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31350-39:
(7*3)+(6*1)+(5*3)+(4*5)+(3*0)+(2*3)+(1*9)=77
77 % 10 = 7
So 31350-39-7 is a valid CAS Registry Number.

31350-39-7Relevant articles and documents

Based on 3, 4 - dihalo -2 (5H) - furanone preparation two effluent-based aryl or hetero-aromatic sulfone method

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Paragraph 0039; 0040, (2017/10/20)

The invention relates to a method for preparing dihalogen methyl aryl sulfone based on 3,4-dihalogen-2(5H)-furanone. The preparation method comprises the following step: by taking 3,4-dihalogen-2(5H)-furanone compounds, sodium arylsulfinate and dimethyl s

Chemoselective mono halogenation of β-keto-sulfones using potassium halide and hydrogen peroxide; synthesis of halomethyl sulfones and dihalomethyl sulfones

Suryakiran,Prabhakar,Srikanth Reddy,Chinni Mahesh,Rajesh,Venkateswarlu

, p. 877 - 881 (2007/10/03)

The synthesis of α-halo β-keto-sulfones using potassium halide and hydrogen peroxide as a chemoselective mono halogenation reagent and the synthesis of α,α-symmetrical and asymmetrical dihalo β-keto-sulfones and α-halo, α-alkyl and β-keto-sulfones is described. Base induced cleavage of α-halo β-keto-sulfones, α,α-dihalo β-keto-sulfones, and α-halo, α-alkyl β-keto-sulfones afforded the corresponding halomethyl sulfones, dihalomethyl sulfones and haloalkyl sulfones.

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