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Benzene, 1-[(2-iodo-1-butenyl)sulfonyl]-4-methyl-, (E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139950-89-3

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139950-89-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139950-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,5 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139950-89:
(8*1)+(7*3)+(6*9)+(5*9)+(4*5)+(3*0)+(2*8)+(1*9)=173
173 % 10 = 3
So 139950-89-3 is a valid CAS Registry Number.

139950-89-3Relevant academic research and scientific papers

"Syn-Effect" in the Conversion of (E)-Vinylic Sulfones to the Corresponding Allylic Sulfones

Hirata, Takaki,Sasada, Yoshihiro,Ohtani, Takashi,Asada, Takahiro,Kinoshita, Hideki,et al.

, p. 75 - 96 (2007/10/02)

It was found that (E)-vinylic sulfones preferentially afford (Z)-allylic sulfones as kinetically-controlled products by treatment with a base under mild conditions, while (Z)-vinylic sulfones give (E)-allylic sulfones.Such stereochemical relationship was

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