Benzo[b]naphtho[1,2-d]thiophene

Also known as: Naphtho[2,1-b]benzothiophene, Naphtho[2,1-b][1]benzothiole, 7-Thiabenzo[c]fluorene, Benzo[b]naptho[2,1-d]thiophene, Benzo(B)naphtha(1,2-D)thiophene, Benzo<a>dibenzothiophene

Benzo[b]naphtho[1,2-d]thiophene (CAS 205-43-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H10S and a molecular weight of 234.316 g/mol. Key properties include a melting point of 185℃ (acetic acid ), a boiling point of 434.3±14.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 163.0±6.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 205-43-6
Jingsj CID: J-1504127-7
Molecular Formula: C₁₆H₁₀S
Molecular Weight: 234.316 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	185℃ (acetic acid )
Boiling Point	434.3±14.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	163.0±6.3 °C
Exact Mass	234.050323
PSA	28.24000
LogP	5.61
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.810
Storage Conditions	2-8°C

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 Benzo[b]naphtho[1,2-d]thiophene?

The CAS number of Benzo[b]naphtho[1,2-d]thiophene is 205-43-6.

What are the molecular formula and molecular weight of Benzo[b]naphtho[1,2-d]thiophene?

Benzo[b]naphtho[1,2-d]thiophene has molecular formula C16H10S and molecular weight 234.316 g/mol.

What are the upstream and downstream products of Benzo[b]naphtho[1,2-d]thiophene?

For Benzo[b]naphtho[1,2-d]thiophene, Upstream Products: 2-Fluorophenylboronic acid, 1-PHENYLNAPHTHALENE; Downstream Products: 1-PHENYLNAPHTHALENE.

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. "Benzo[b]naphtho[1,2-d]thiophene (CAS 205-43-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504127-7 (accessed 2026-11-09).

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