9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one

Also known as: 4H-Benzo[4,5]cyclohepta[1,2-b]thiophen-4-one,9,10-dihydro-, 4-Oxo-9,10-dihydro-4H-benzo(4,5)-cyclohepta-(1,2b)thiophene, 9,10-Dihydro-4H-benzo(4,5)cyclohepta(1,2-b)thiophen-4-one, 9,10-Dihydro-4H-benzo[4,5]cyclohepta[1,2-b]-4-thiophenone, 9,10-Dihydro-4H-benzo[4,5]cyclohepta[b]-thiophen-4-one, 9,10-dihydro-1-thiabenzo[f]azulen-4-one, 4,5-dihydrobenzo[1,2]cyclohepta[3,4-b]thiophen-10-one, Pizotifen Impurity 1, Ketotifen main ring

9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one (CAS 1622-55-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H10OS and a molecular weight of 214.28300 g/mol. Key properties include a boiling point of 371.1ºC at 760 mmHg, a density of 1.262g/cm3 and a flash point of 178.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1622-55-5
Jingsj CID: J-1108925-1
Molecular Formula: C₁₃H₁₀OS
Molecular Weight: 214.28300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	371.1ºC at 760 mmHg
Density	1.262g/cm3
Flash Point	178.2ºC
Exact Mass	214.04500
PSA	45.31000
LogP	3.07770
Vapor Pressure	1.06E-05mmHg at 25°C
Refractive Index	1.644

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 9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one?

The CAS number of 9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one is 1622-55-5.

What are the molecular formula and molecular weight of 9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one?

9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one has molecular formula C13H10OS and molecular weight 214.28300 g/mol.

What are the upstream and downstream products of 9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one?

For 9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one, Upstream Products: 2-[2-(2-Thienyl)ethyl]benzoic acid, Methyl o-toluate, 2-Thiophenecarboxaldehyde; Downstream Products: 10-Methoxy-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one, 10-methoxy-4-(1-methylpiperidin-4-yl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophene-4-ol, Ketotifen.

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. "9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one (CAS 1622-55-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1108925-1 (accessed 2026-11-09).

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