21503-35-5

Basic information

• Product Name: <1>benzothieno<2,3-b>-1,4-naphthoquinone
• Synonyms: <1>benzothieno<2,3-b>-1,4-naphthoquinone
• CAS NO: 21503-35-5
• Molecular Weight: 264.304
• Mol File: 21503-35-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: <1>benzothieno<2,3-b>-1,4-naphthoquinone(CAS DataBase Reference)
• NIST Chemistry Reference: <1>benzothieno<2,3-b>-1,4-naphthoquinone(21503-35-5)
• EPA Substance Registry System: <1>benzothieno<2,3-b>-1,4-naphthoquinone(21503-35-5)

Safety Data

• Hazardous Substances Data: 21503-35-5(Hazardous Substances Data)

Upstream product

• 22720-67-8 3-(2-methylbenzoyl)benzothiophene 
• 65628-46-8 3-benzoyl-2-methylbenzothiophene 
• 65628-48-0 2-benzoyl-3-methylbenzothiophene 
• 74882-00-1 2-(2-methylbenzoyl)benzothiophene 

Downstream Products

• 32362-68-8 6,11-dimethyl-benzo[b]naphtho[2,3-d]thiophene 
• 243-46-9 benzo[b]naphtho[2,3-d]thiophene 

Relevant articles and documents

Thiophene analogues of carcinogenic polycyclic hydrocarbons. Elbs pyrolysis of various aroylmethylbenzo[b]thiophenes

The synthesis of two benzonaphthothiophenes and of four benzophenanthrothiophenes through Elbs cyclodehydration of ortho-methylated aroylbenzo[b]thiophenes is described. The occurrence of a rearrangement of the thiophene ring in the course of the cyclization is discussed as well as the influence of the temperature on a concurrent cyclodehydration process. Several of these poly-condensed thiophenes were found to be carcinogenic in mice.