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3-isopropenyl-5-(4-methylphenylazo)tropolone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128980-80-3

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128980-80-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128980-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,8 and 0 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128980-80:
(8*1)+(7*2)+(6*8)+(5*9)+(4*8)+(3*0)+(2*8)+(1*0)=163
163 % 10 = 3
So 128980-80-3 is a valid CAS Registry Number.

128980-80-3Relevant academic research and scientific papers

Reactions of 3-Isopropenyltropolones with Bromine and N-Bromosuccinimide: Formation of 8H-Cycloheptafuran-8-one Derivatives

Jin, Ren-Hao,Yin, Bing-Zhu,Jin, Zhong-Tian,Imafuku, Kimiaki

, p. 583 - 586 (2007/10/02)

3-Isopropenyltropolones 1a-c were treated with bromine in carbon tetrachloride to give 3-methyl-8H-cycloheptafuran-8-ones 2a-c and their corresponding 7-bromo-substituted compounds 3a-c, while reactions in acetic acid gave the bromo-substituted compoun

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