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415680-03-4

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415680-03-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 415680-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,1,5,6,8 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 415680-03:
(8*4)+(7*1)+(6*5)+(5*6)+(4*8)+(3*0)+(2*0)+(1*3)=134
134 % 10 = 4
So 415680-03-4 is a valid CAS Registry Number.

415680-03-4Downstream Products

415680-03-4Relevant articles and documents

Environmentally benign process for the synthesis of 2,3-disubstituted benzo[b]thiophenes using electrophilic cyclization

Kim, Seoyoung,Dahal, Nikesh,Kesharwani, Tanay

, p. 4373 - 4376 (2013)

We have developed a greener process for the synthesis of 2,3-disubstituted benzo[b]thiophenes using electrophilic cyclization as a key step. Our method not only employs an environmentally friendly solvent ethanol, but also utilizes safe and inexpensive in

Sodium halides as the source of electrophilic halogens in green synthesis of 3-halo- and 3,n-dihalobenzo[b]thiophenes

Kesharwani, Tanay,Kornman, Cory,Tonnaer, Amanda,Hayes, Amanda,Kim, Seoyoung,Dahal, Nikesh,Romero, Ralf,Royappa, Andrew

, p. 2973 - 2984 (2018/05/23)

A convenient methodology for the synthesis of mono- and di-halogenated benzo[b]thiophenes is described herein, which utilizes copper(II) sulfate pentahydrate and various sodium halides in the presence of substituted 2-alkynylthioanisoles. The proposed met

Halocyclization of 2-alkynylthioanisoles by cupric halides: synthesis of 2-substituted 3-halobenzo[b]thiophenes

Lu, Wen-Der,Wu, Ming-Jung

, p. 356 - 362 (2007/10/03)

Reaction of 2-alkynylthioanisoles 3 with 2 equiv of CuX2 (X=Br or Cl) in refluxing CH3CN for 2.5 h gave the 2-substituted 3-halobenzo[b]thiophenes 4 in good yields.

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