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ChemicalBook >> CAS DataBase List >>Thieno[2,3-b]pyridine (8CI,9CI)

Thieno[2,3-b]pyridine (8CI,9CI)

Thieno[2,3-b]pyridine (8CI,9CI) Structure
Thieno[2,3-b]pyridine (8CI,9CI) structure
CAS No.
272-23-1
Chemical Name:
Thieno[2,3-b]pyridine (8CI,9CI)
Synonyms
NSC 152397;Thieno[2,3-b]pyridine (8CI,9CI)
CBNumber:
CB21071108
Molecular Formula:
C7H5NS
Molecular Weight:
135.19
MDL Number:
MFCD01631145
MOL File:
272-23-1.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-27 23:53:37
Product description Number Pack Size Price
Thieno[2,3-b]pyridine Asreported 291053 250mg $389
Thieno[2,3-b]pyridine Asreported 291053 500mg $744
Thieno[2,3-b]pyridine Asreported 291053 1g $1097
Thieno[2,3-b]pyridine Asreported 291053 2g $1805
Thieno[2,3-b]pyridine Asreported 291053 5g $3717
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Thieno[2,3-b]pyridine (8CI,9CI) Properties

Boiling point 236.5±13.0 °C(Predicted)
Density 1.272±0.06 g/cm3(Predicted)
storage temp. Keep in dark place,Sealed in dry,Room Temperature
pka 4.54±0.30(Predicted)
Appearance Colorless to light yellow Liquid
FDA UNII 6XG2YBX9JJ

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H335-H319
Precautionary statements  P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P-P264-P270-P301+P312-P330-P501
HS Code  2934999090

Thieno[2,3-b]pyridine (8CI,9CI) price More Price(49)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Usbiological 291053 Thieno[2,3-b]pyridine Asreported 272-23-1 250mg $389 2026-06-03 Buy
Usbiological 291053 Thieno[2,3-b]pyridine Asreported 272-23-1 500mg $744 2026-06-03 Buy
Usbiological 291053 Thieno[2,3-b]pyridine Asreported 272-23-1 1g $1097 2026-06-03 Buy
Usbiological 291053 Thieno[2,3-b]pyridine Asreported 272-23-1 2g $1805 2026-06-03 Buy
Usbiological 291053 Thieno[2,3-b]pyridine Asreported 272-23-1 5g $3717 2026-06-03 Buy
Product number Packaging Price Buy
291053 250mg $389 Buy
291053 500mg $744 Buy
291053 1g $1097 Buy
291053 2g $1805 Buy
291053 5g $3717 Buy

Thieno[2,3-b]pyridine (8CI,9CI) Chemical Properties,Uses,Production

Synthesis

2-Nitrothiophene

609-40-5

Malonaldehyde bis(diethyl acetal)

122-31-6

Thieno[2,3-b]pyridine (8CI,9CI)

272-23-1

Thieno[2,3-b]pyridine was synthesized as follows: 1.08 g (8.3 mmol) of 2-nitrothiophene and 16 mL of concentrated hydrochloric acid were sequentially added to a vigorously stirred mixture at 30 °C. Subsequently, a total of 2.08 g of granulated tin was added in batches of 0.42 g. After most of the tin was dissolved, 6 mL of ethanol and 0.5 g of anhydrous zinc chloride were added to the mixture and the mixture was heated to 85°C. The mixture was then stirred vigorously at 30°C for 1 hour. Next, 1.4 g (6.5 mmol) of malonaldehyde tetraethyl acetal (purchased from Aldrich Chemical Co.) dissolved in 3 mL of ethanol was added all at once. The reaction mixture was maintained at 85 °C for 1 h before the reaction was quenched by pouring 9 g of ice. The aqueous mixture was alkalized with concentrated ammonia solution and subsequently extracted with three 5 mL dichloromethane. The organic phases were combined and distilled to give 0.4 g (44% yield) of the target product thieno[2,3-b]pyridine as a light yellow liquid.

References

[1] Tetrahedron Letters, 2017, vol. 58, # 20, p. 1952 - 1956
[2] Patent: WO2011/79804, 2011, A1. Location in patent: Page/Page column 33
[3] Patent: US2012/245178, 2012, A1. Location in patent: Page/Page column 19

Thieno[2,3-b]pyridine (8CI,9CI) Preparation Products And Raw materials

Raw materials

2-Nitrothiophene Malonaldehyde bis(diethyl acetal) Zinc chloride Hydrochloric acid Tin
Ethanol Water

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Preparation Products

3-Bromothieno[2,3-b]pyridine

Thieno[2,3-b]pyridine (8CI,9CI) Suppliers

Global( 80)Suppliers
Supplier Tel Email Country ProdList Advantage
Shandong chuangyingchemical Co., Ltd. 		18853181302 sale@chuangyingchem.com CHINA 5906 58
Alchem Pharmtech,Inc. 		8485655694 sales@alchempharmtech.com United States 63687 58
career henan chemical co 		+86-0371-86658258 +8613203830695 factory@coreychem.com China 29792 58
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
Hefei Hirisun Pharmatech Co., Ltd 		+8615056975894 shawn@hirisunpharm.com CHINA 9911 58
Zhejiang J&C Biological Technology Co.,Limited 		+1-2135480471 +1-2135480471; sales@sarms4muscle.com China 10473 58
Huadong Medicine (Xi'an)Bodyguard Pharmaceutical Co.,Ltd. 		+86-029-86185165 +8618629664246 guoyuan@eastchinapharm.com China 1615 58
Coresyn Pharmatech Co., Ltd. 		+86-571-86626709 +86-18157142896 cbc@coresyn.com China 9984 58
Henan Aochuang Chemical Co.,Ltd. 		+86-0371-63689365 +8618638391208 sales@aochuangchem.com China 9333 58
HANGZHOU LEAP CHEM CO., LTD. 		+86-571-87711850 market18@leapchem.com China 43333 58
Supplier Advantage
Shandong chuangyingchemical Co., Ltd. 		58
Alchem Pharmtech,Inc. 		58
career henan chemical co 		58
Hefei TNJ Chemical Industry Co.,Ltd. 		58
Hefei Hirisun Pharmatech Co., Ltd 		58
Zhejiang J&C Biological Technology Co.,Limited 		58
Huadong Medicine (Xi'an)Bodyguard Pharmaceutical Co.,Ltd. 		58
Coresyn Pharmatech Co., Ltd. 		58
Henan Aochuang Chemical Co.,Ltd. 		58
HANGZHOU LEAP CHEM CO., LTD. 		58

View Lastest Price from Thieno[2,3-b]pyridine (8CI,9CI) manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Thieno[2,3-b]pyridine (8CI,9CI) pictures 2025-04-04 Thieno[2,3-b]pyridine (8CI,9CI)
272-23-1
 1kg 98% 1Ton Henan Aochuang Chemical Co.,Ltd.
Thieno[2,3-b]pyridine (8CI,9CI) pictures 2019-12-20 Thieno[2,3-b]pyridine (8CI,9CI)
272-23-1
 $1.00 1KG 99% Career Henan Chemical Co

Thieno[2,3-b]pyridine (8CI,9CI) Spectrum

Thieno[2,3-b]pyridine (8CI,9CI)(272-23-1)1HNMR

272-23-1(Thieno[2,3-b]pyridine (8CI,9CI))Related Search:

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Thieno[2,3-b]pyridine-5-carboxylic acid THIENO[2,3-B]PYRIDINE-2-CARBALDEHYDE Thieno[3,2-d]pyrimidine-4-carboxylic acid Thieno[2,3-d]pyrimidin-4(3H)one thieno[2,3-b]pyridin-4-ol
Methyl thieno[2,3-b]pyridine-2-carboxylate thieno[2,3-d]thiazol-2-amine 1,3-Dihydrothiopheno[3,2-d]pyrimidine-2,4-dione THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID 3-AMINO-4,6-DIMETHYL-THIENO[2,3-B]PYRIDINE-2-CARBONITRILE
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NSC 152397 Thieno[2,3-b]pyridine (8CI,9CI) 272-23-1 THIENOPYRIDINE Building Blocks Thieno[x,x-y]pyridine