209268-27-9

Upstream product

• 209268-25-7 5-benzenesulfonyloxybenzo[b]thiophene-3-carboxylic acid 
• 98-09-9 benzenesulfonyl chloride 
• 16304-39-5 5-hydroxybenzo[b]thiophene-3-carboxylic acid 

Downstream Products

• 244246-67-1 [3-[(1R,2R,3R,5S)-3-(2-hydroxyethyl)-10-norpinan-2-yl]carbamoylbenzo[b]thiophen-5-yl] benzenesulfonate 

Relevant academic research and scientific papers

Process for preparing 5-hydroxybenzo [b] thiophene-3-carboxylic acid derivatives

Processes for producing compounds of the formula (VI) are disclosed. Benzothiophenecarboxylic acid derivatives of the formula (I), which are useful as starting materials for producing drugs, are disclosed. Particularly, disclosed is a process for preparin

Process for producing 5-hydroxybenzo[b] thiophene-3-carboxylic acid derivatives

Benzothiophenecarboxylic acid derivatives of the formula (I) which are useful as starting materials for producing drugs, and a process for preparing 5-hydroxybenzo[b]-thiophene-3-carboxylic acid derivatives of the formula (VI) which are specific PGD2

Benzothiophenecarboxamide derivatives and PGD2 antagonists comprising them

PCT No. PCT/JP97/04527 Sec. 371 Date May 17, 1999 Sec. 102(e) Date May 17, 1999 PCT Filed Dec. 10, 1997 PCT Pub. No. WO98/25919 PCT Pub. Date Jun. 18, 1998A compound, a pharmaceutically acceptable salt thereof, or a hydrate thereof having PGD2-antagonisti