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4-chloro-2-(chloromethyl)-1-(ethylsulfanyl)benzene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21571-67-5

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21571-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21571-67-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,7 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21571-67:
(7*2)+(6*1)+(5*5)+(4*7)+(3*1)+(2*6)+(1*7)=95
95 % 10 = 5
So 21571-67-5 is a valid CAS Registry Number.

21571-67-5Relevant academic research and scientific papers

Synthesis of 2,3-dihydrobenzo[b]thiophen-3-amine 1,1-dioxide derivatives via lda-mediated cyclization of o-(alkylsulfonyl)benzyl azides with denitrogenation

Kobayashi, Kazuhiro,Chikazawa, Yuuki,Nogi, Takashi

, p. 1678 - 1692 (2017/09/20)

A new and efficient method for the synthesis of 2,3-dihydrobenzo[b]thiophen-3-amine 1,1-dioxide derivatives has been developed. Thus, treatment of o-(alkylsulfonyl)benzyl azides, which are readily obtainable from commercially available starting materials

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