ChemicalBook >> CAS DataBase List >>4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene structure

CAS No.: 365547-20-2

Chemical Name:: 4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene

Synonyms: 4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene;DTC26;S1372;4,4-Di-2-ethylhexyl;4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b;4,4-bis (2-ethylhexyl) - dithiophene-cyclopentadiene);4,4-Di-2-ethylhexyl-cyclopenta[2,1-b:3,4-b']dithiophene;4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene;4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene;4H-Cyclopenta[2,1-b:3,4-b']dithiophene, 4,4-bis(2-ethylhexyl)-

CBNumber:: CB72660076

Molecular Formula:: C25H38S2

Molecular Weight:: 402.7

MDL Number:: MFCD28291964

MOL File:: 365547-20-2.mol

Last updated:2026-05-28 05:28:23

Product description	Number	Pack Size	Price
4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene >98.0%(GC)	B4102	1g	$393
4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene >98.0%(GC)	B4102	5g	$1365
4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene	303911	250.00mg	$30
4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene	303911	1.00g	$89
4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene	303911	5.00g	$361
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4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene Properties

Boiling point	490.0±25.0 °C(Predicted)
Density	1.007±0.06 g/cm3(Predicted)
refractive index	1.5430 to 1.5470
Flash point	189.00°C
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
form	clear liquid
color	Colorless to Red to Green
InChI	InChI=1S/C25H38S2/c1-5-9-11-19(7-3)17-25(18-20(8-4)12-10-6-2)21-13-15-26-23(21)24-22(25)14-16-27-24/h13-16,19-20H,5-12,17-18H2,1-4H3
InChIKey	NUCIQEWGTLOQTR-UHFFFAOYSA-N
SMILES	C12C3SC=CC=3C(CC(CC)CCCC)(CC(CC)CCCC)C=1C=CS2

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H302-H315-H319-H335
Precautionary statements	P261-P305+P351+P338
HS Code	2934.99.4400

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene price More Price(36)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TCI Chemical	B4102	4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene >98.0%(GC)	365547-20-2	1g	$393	2026-04-30	Buy
TCI Chemical	B4102	4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene >98.0%(GC)	365547-20-2	5g	$1365	2026-04-30	Buy
Matrix Scientific	303911	4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene	365547-20-2	250.00mg	$30	2026-05-19	Buy
Matrix Scientific	303911	4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene	365547-20-2	1.00g	$89	2026-05-19	Buy
Matrix Scientific	303911	4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene	365547-20-2	5.00g	$361	2026-05-19	Buy

Product number	Packaging	Price	Buy
B4102	1g	$393	Buy
B4102	5g	$1365	Buy
303911	250.00mg	$30	Buy
303911	1.00g	$89	Buy
303911	5.00g	$361	Buy

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene Chemical Properties,Uses,Production

Synthesis

18908-66-2

389-58-2

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene

365547-20-2

Example 5 Synthesis of 4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene: Cyclopentylbithiophene (1.5 g, 0.00843 mol) was dissolved in DMSO (50 mL). KOH (1.89 g, 0.0337 mol), sodium iodide (50 mg) and 2-ethylhexyl bromide (3.25 g, 0.0169 mol) were sequentially added to the solution under nitrogen protection. The reaction mixture was stirred under nitrogen atmosphere for 16 hours. After completion of the reaction, water was added and the reaction mixture was extracted with tert-butyl methyl ether. The organic layer was separated, dried with magnesium sulfate and concentrated. The residue was purified by column chromatography using hexane as eluent. The grades containing pure 4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene were combined and concentrated. After vacuum drying, a colorless oily product was obtained in a yield of 2.68 g (79%).1H NMR (CDCl3, 250 MHz): δ 7.13 (m, 2H), 6.94 (m, 2H), 1.88 (m, 4H), 0.94 (m, 16H), 0.78 (t, J=6.4 Hz, 6H), 0.61 (t, J=7.3 Hz, 6H).

References

[1] Journal of Polymer Science, Part A: Polymer Chemistry, 2012, vol. 50, # 8, p. 1622 - 1635
[2] RSC Advances, 2014, vol. 4, # 71, p. 37738 - 37745
[3] RSC Advances, 2014, vol. 40, # 71, p. 37738 - 37745
[4] Macromolecules, 2010, vol. 43, # 2, p. 697 - 708
[5] Patent: US7772485, 2010, B2. Location in patent: Page/Page column 11-12

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene Preparation Products And Raw materials

Raw materials

2-Ethylhexyl bromide 3,4-Dithia-7H-cyclopenta[a]pentalene Sodium iodide Potassium hydroxide Dimethyl sulfoxide

Preparation Products

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene Suppliers

Global( 91)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD	+86-15225627621 +86-13213167925	jiuyitime@fdachem.com	China	16512	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21586	55
Yunbio Tech Co.,Ltd.	+86-010-60605551 +86-18046518538	yunbiochem@126.com	China	321	58
career henan chemical co	+86-0371-86658258 +8613203830695	factory@coreychem.com	China	29792	58
SHANGHAI T&W PHARMACEUTICAL CO., LTD.	+86-021-61551413 +8618813727289	contact@trustwe.com	China	5745	58
Zhengzhou Alfa Chemical Co.,Ltd	+8618530059196	sale04@alfachem.cn	China	9548	58
CD Chemical Group Limited	+8615986615575	info@codchem.com	China	17259	58
Suzhou Laing Biotechnology Co.,Ltd	+86-13004516015 +86-18149392822	christina@laingbiotec.com	China	777	58
HANGZHOU LEAP CHEM CO., LTD.	+86-571-87711850	market18@leapchem.com	China	24597	58
Xuzhou B&C Chemical Technology Co., Ltd	+86-400-0516-021 +8617855106283	info@bcpharma.com	China	2732	58

Supplier	Advantage
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD	58
Henan Tianfu Chemical Co.,Ltd.	55
Yunbio Tech Co.,Ltd.	58
career henan chemical co	58
SHANGHAI T&W PHARMACEUTICAL CO., LTD.	58
Zhengzhou Alfa Chemical Co.,Ltd	58
CD Chemical Group Limited	58
Suzhou Laing Biotechnology Co.,Ltd	58
HANGZHOU LEAP CHEM CO., LTD.	58
Xuzhou B&C Chemical Technology Co., Ltd	58

View Lastest Price from 4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2026-07-02	4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene 365547-20-2	$3.00-9.00	1kg	99%min	50kg	ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
	2020-01-10	4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene 365547-20-2	$1.00	1KG	98% HPLC	10 tons/month	Career Henan Chemical Co

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene
365547-20-2
$3.00-9.00
99%min
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene
365547-20-2
$1.00
98% HPLC
Career Henan Chemical Co

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene Spectrum

4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene(365547-20-2)¹HNMR

4,4-Di-2-ethylhexyl-cyclopenta[2,1-b:3,4-b']dithiophene 4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b]dithiophene 4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene DTC26 4,4-di(2-ethylhexyl)-4H-cyclopenta[2,1-b 4,4-Di-2-ethylhexyl 4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene > 4H-Cyclopenta[2,1-b:3,4-b']dithiophene, 4,4-bis(2-ethylhexyl)- S1372 4,4-bis (2-ethylhexyl) - dithiophene-cyclopentadiene) 4,4-Bis(2-ethylhexyl)-4H-cyclopenta[1,2-b:5,4-b']dithiophene 4,4-Bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene 365547-20-2 C25H38S2

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