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41877-18-3

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41877-18-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 41877-18-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,8,7 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 41877-18:
(7*4)+(6*1)+(5*8)+(4*7)+(3*7)+(2*1)+(1*8)=133
133 % 10 = 3
So 41877-18-3 is a valid CAS Registry Number.

41877-18-3Downstream Products

41877-18-3Relevant articles and documents

Reactions of 3-Isopropenyl- and 3-Acetyltropolone with Quarternary Ammonium Tribromides

Matsunaga, Yoichiro,Imafuku, Kimiaki

, p. 295 - 297 (1992)

Treatments of 3-isopropenyltropolone with quarternary ammonium tribromides in tetrahydrofuran afforded 3-methyl-8H-cycloheptafuran-8-one.The reactions in methanol-dichloromethane gave 7-bromo-3-methyl-8H-cycloheptafuran-8-one.Bromination of 3-acetyltropolone with the tribromides in tetrahydrofuran produces 3-(bromoacetyl)-tropolone, while the reaction in the methanolic solvent gave 7-bromo- and 5,7-dibromo-substituted 3-acetyltropolones.The brominations of 4'-hydroxyacetophenone were also carried out.

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