17-Octadecynoic acid
Also known as: 17-Octadecynoic acid, 17-ODYA, Octadec-17-ynoic acid, Alkynyl Stearic Acid, MFCD00077382, 17-ODYA (17-Octadecynoic acid)
17-Octadecynoic acid (CAS 34450-18-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H32O2 and a molecular weight of 280.445 g/mol. Key properties include a melting point of 142-148 °C(lit.), a boiling point of 400.8±18.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 194.7±15.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 34450-18-5
- Jingsj CID
- J-45992-7
- Molecular Formula
- C18H32O2
- Molecular Weight
- 280.445 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 142-148 °C(lit.) |
|---|---|
| Boiling Point | 400.8±18.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 194.7±15.9 °C |
| Exact Mass | 280.240234 |
| PSA | 37.30000 |
| LogP | 6.86 |
| Vapor Pressure | 0.0±2.0 mmHg at 25°C |
| Refractive Index | 1.470 |
Activity & Biological Data
| Target | Alkyl-Chain |
|---|---|
| Additional Information | [1]. An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562 |
Customs & Trade Information
| HS Code | 2916190090 |
|---|---|
| Summary | 2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 17-Octadecynoic acid?
The CAS number of 17-Octadecynoic acid is 34450-18-5.
What are the molecular formula and molecular weight of 17-Octadecynoic acid?
17-Octadecynoic acid has molecular formula C18H32O2 and molecular weight 280.445 g/mol.
What are the upstream and downstream products of 17-Octadecynoic acid?
For 17-Octadecynoic acid, Upstream Products: 11-Bromo-1-undecanol, oleic acid, Methyl oleate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "17-Octadecynoic acid (CAS 34450-18-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45992-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.