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135900-99-1

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135900-99-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135900-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,9,0 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 135900-99:
(8*1)+(7*3)+(6*5)+(5*9)+(4*0)+(3*0)+(2*9)+(1*9)=131
131 % 10 = 1
So 135900-99-1 is a valid CAS Registry Number.

135900-99-1Downstream Products

135900-99-1Relevant articles and documents

Further Examples of Tandem Dimerization Ring-Opening of Substituted 3-Bromothiophene 1,1-Dioxides. Preparation of Trisubstituted Benzenes. X-Ray Structure Determination of 3,5-Dibromo-7,7a-dimethyl-2,4-diphenyl-cis-3a,7a-dihydrobenzothiophene 1,1-Dioxide

Gronowitz, Salo,Nikitidis, Grigorios,Hallberg, Anders,Stalhandske, Claes

, p. 636 - 643 (2007/10/02)

Stirring 3-bromo-2-methylthiophene 1,1-dioxide, 3-bromo-2-butylthiophene 1,1-dioxide and 3-bromo-2-phenylthiophene 1,1-dioxide at room temperature with basic alumina in pentane-dichloromethane solution led to dihydrobenzothiophene 1,1-dioxides.Refluxing of the same reaction mixtures led to the ring-opening products, the trisubstituted benzenes.Refluxing of 3-bromo-5-methyl-2-phenylthiophene 1,1-dioxide in decalin afforded the 3,5-dibromo-7,7a-dimethyl-2,4-diphenyl-cis-3a,7a-dihydrobenzothiophene 1,1-dioxide.The structure was established by X-ray crystallography.

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