alpha-Quaterthiophene

Also known as: 2,2':5',2'':5'',2'''-Quaterthiophene, 2,2':5',2'':5'',2'''-Tetrathiophene, alpha-Quarterthiophene, alpha-Quarterthienyl, 4T, 2,2':5',2'':5'',2'''-quaterthiophene, 2,2':5',2'':5'',2'''-tetrathiophene, α-Quarterthienyl, MFCD03094036, NSC 700135

alpha-Quaterthiophene (CAS 5632-29-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H10S4 and a molecular weight of 330.51100 g/mol. Key properties include a melting point of 211-214ºC(lit.), a boiling point of 453.8ºC at 760mmHg, a density of 1.358g/cm3 and a flash point of 172.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5632-29-1
Jingsj CID: J-28791-7
Molecular Formula: C₁₆H₁₀S₄
Molecular Weight: 330.51100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	211-214ºC(lit.)
Boiling Point	453.8ºC at 760mmHg
Density	1.358g/cm3
Flash Point	172.3ºC
Exact Mass	329.96700
PSA	112.96000
LogP	6.93360
Refractive Index	1.695

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of alpha-Quaterthiophene?

The CAS number of alpha-Quaterthiophene is 5632-29-1.

What are the molecular formula and molecular weight of alpha-Quaterthiophene?

alpha-Quaterthiophene has molecular formula C16H10S4 and molecular weight 330.51100 g/mol.

What are the upstream and downstream products of alpha-Quaterthiophene?

For alpha-Quaterthiophene, Upstream Products: 2,2'-Bithiophene, 5-Bromo-2,2'-bithiophene, 5,5'-Dibromo-2,2'-bithiophene; Downstream Products: α-Sexithiophene, alpha-Quinquethiophene, α-Octithiophene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "alpha-Quaterthiophene (CAS 5632-29-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28791-7 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.