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287929-21-9

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287929-21-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 287929-21-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,7,9,2 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 287929-21:
(8*2)+(7*8)+(6*7)+(5*9)+(4*2)+(3*9)+(2*2)+(1*1)=199
199 % 10 = 9
So 287929-21-9 is a valid CAS Registry Number.

287929-21-9Relevant articles and documents

Rapid and total bromination of aromatic compounds using TsNBr2 without any catalyst

Saikia, Indranirekha,Chakraborty, Pranita,Sarma, Manas Jyoti,Goswami, Mridusmita,Phukan, Prodeep

, p. 211 - 217 (2015)

N,N-Dibromo-p-toluenesulfonamide (TsNBr2) has been found to be a new reagent for bromination of aromatic compounds. The reaction is extremely fast and goes into completion instantaneously at ambient temperature to produce exclusively the corresponding polybrominated product. This procedure is applicable to various phenols, anisole, and anilines to give corresponding polybrominated compound as a single product in excellent yield.

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