2,2'-Biquinoline

Also known as: 2,2'-Diquinolyl, Cuproine, 2-quinolin-2-ylquinoline, 2,2'-Biquinolyl

2,2'-Biquinoline (CAS 119-91-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C18H12N2 and a molecular weight of 256.301 g/mol. Key properties include a melting point of 192-195 °C(lit.), a boiling point of 456.1±30.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 203.6±15.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 119-91-5
Jingsj CID: J-15257-8
Molecular Formula: C₁₈H₁₂N₂
Molecular Weight: 256.301 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	192-195 °C(lit.)
Boiling Point	456.1±30.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	203.6±15.8 °C
Exact Mass	256.100037
PSA	25.78000
LogP	3.82
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.720

Customs & Trade Information

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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 2,2'-Biquinoline?

The CAS number of 2,2'-Biquinoline is 119-91-5.

What are the molecular formula and molecular weight of 2,2'-Biquinoline?

2,2'-Biquinoline has molecular formula C18H12N2 and molecular weight 256.301 g/mol.

What are the upstream and downstream products of 2,2'-Biquinoline?

For 2,2'-Biquinoline, Upstream Products: 2-Chloroquinoline, Quinoline 1-oxide, 1-Butaneboronic acid; Downstream Products: Ofloxacin.

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. "2,2'-Biquinoline (CAS 119-91-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-15257-8 (accessed 2026-11-09).

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