1-(2-Pyridylazo)-2-naphthol
Also known as: 1-(2'-pyridylazo)-2-naphthol, 1-(2-Pyridinyldiazenyl)-2-naphthol, 1-(2-pyridylazo)-2-hydroxynaphthalene, 1-(Pyridin-2-yldiazenyl)-2-naphthol, 1-(pyridin-2-yldiazenyl)naphthalen-2-ol, 2-(2-hydroxynaphth-1-ylazo)pyridine, 2-Naphthalenol, 1-[2-(2-pyridinyl)diazenyl]-, 2-hydroxy-1-(2-pyridylazo)naphthalene, Hpan, MFCD00004071, O-PAN, PAN, PAN indicator, PAN-2, Pyridylazonaphthol
1-(2-Pyridylazo)-2-naphthol (CAS 85-85-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H11N3O and a molecular weight of 249.267 g/mol. Key properties include a melting point of 138-140 °C, a boiling point of 469.6±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 237.8±23.2 °C. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 85-85-8
- Jingsj CID
- J-1093091-3
- Molecular Formula
- C15H11N3O
- Molecular Weight
- 249.267 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 138-140 °C |
|---|---|
| Boiling Point | 469.6±25.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 237.8±23.2 °C |
| Exact Mass | 249.090210 |
| PSA | 57.84000 |
| LogP | 2.74 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.662 |
| Additional Property | Insoluble |
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. 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 1-(2-Pyridylazo)-2-naphthol?
The CAS number of 1-(2-Pyridylazo)-2-naphthol is 85-85-8.
What are the molecular formula and molecular weight of 1-(2-Pyridylazo)-2-naphthol?
1-(2-Pyridylazo)-2-naphthol has molecular formula C15H11N3O and molecular weight 249.267 g/mol.
Which suppliers offer 1-(2-Pyridylazo)-2-naphthol?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of 1-(2-Pyridylazo)-2-naphthol?
For 1-(2-Pyridylazo)-2-naphthol, Upstream Products: 2-Naphthol; Downstream Products: 1-Amino-2-naphthol hydrochloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(2-Pyridylazo)-2-naphthol (CAS 85-85-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1093091-3 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.