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155800-42-3

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155800-42-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155800-42-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,0 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 155800-42:
(8*1)+(7*5)+(6*5)+(5*8)+(4*0)+(3*0)+(2*4)+(1*2)=123
123 % 10 = 3
So 155800-42-3 is a valid CAS Registry Number.

155800-42-3Relevant articles and documents

Synthesis of (perfluoroalkylsulfonyl)benzenes

Joglekar, Bharati,Miyake, Tomoko,Kawase, Ritsu,Shibata, Katsuyoshi,Muramatsu, Hiroshige,Matsui, Masaki

, p. 123 - 126 (2007/10/03)

4-Substituted (perfluoroalkylsulfonyl)benzenes have been synthesized by the oxidation of 4-substituted (perfluoroalkylthio)benzenes with hydrogen peroxide, anhydrous chromic oxide and potassium permanganate in good yields. 4-(Perfluoroalkylsulfonyl)anilines have been also prepared by the reduction of the corresponding nitrobenzenes. - Keywords: Synthesis; (Perfluoroalkylsulfonyl)benzenes; NMR spectroscopy; Mass spectrometry

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