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3,5-Dimethylbicyclo<4.2.0>octa-1,3,5-trien-7-on-tosylhydrazon is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

20643-23-6

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20643-23-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20643-23-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,4 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20643-23:
(7*2)+(6*0)+(5*6)+(4*4)+(3*3)+(2*2)+(1*3)=76
76 % 10 = 6
So 20643-23-6 is a valid CAS Registry Number.

20643-23-6Downstream Products

20643-23-6Relevant academic research and scientific papers

Reaction of Substituted Hydrazones with Thionyl Chloride and Sulfuryl Chloride

Meier, Herbert,Trickes, Georg,Laping, Elisabeth,Merkle, Ursula

, p. 183 - 192 (2007/10/02)

Treatment of acetylhydrazones 2, ethoxycarbonylhydrazones 3, p-tolylsulfonylhydrazones 4 or semicarbazones 5 with thionyl chloride leads to the 1,2,3-thiadiazoles 6a-o.Sulfuryl chloride on the other hand accomplishes the transfer of chlorine without incorporating a sulfur atom.The new synthesized 1,2,3-thiadiazoles 6g-o are characterized in detail by spectroscopic methods.

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