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2,3,6,7-Tetraphenyl-thieno[3,2-b]pyran-5-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

99261-20-8

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99261-20-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99261-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,2,6 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99261-20:
(7*9)+(6*9)+(5*2)+(4*6)+(3*1)+(2*2)+(1*0)=158
158 % 10 = 8
So 99261-20-8 is a valid CAS Registry Number.

99261-20-8Downstream Products

99261-20-8Relevant academic research and scientific papers

NOVEL SYNTHESIS OF HETEROCYCLIC SPIRANS BY TANDEM CYCLOADDITION TO SULFUR-CONTAINING HETEROCUMULENES

Ohshiro, Yoshiki,Nanimoto, Hitoshi,Tanaka, Hiroyuki,Komatsu, Mitsuo,Agawa, Toshio,et al.

, p. 3015 - 3018 (2007/10/02)

Novel Ni(CO)4-promoted tandem cycloadditions of diphenylcyclopropenone to isothiocyanates and to CS2 were found to provide new heterocyclic spirans, pyrroline-2-one-5-spiro-5'-thiolene-4'-ones and a thiolene-2-one-5-spiro-5'-thiolene-4'-one, respectively,

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