L-4-Chlorophenylalanine
Also known as: Fenclonine, 4-Chloro-L-phenylalanine, 4-Chloro-Phe-OH, H-Phe(4-Cl)-OH, H-4-Chloro-Phe-OH, L-PCPA, L-PCP, p-Chloro-L-phenylalanine, PCPA, p-CPA, p-Cl-L-Phe-OH, (S)-2-Amino-3-(4-chlorophenyl)propanoic acid, 3-(4-Chlorophenyl)-L-alanine, RARECHEM BK PT 0013, MFCD00063065, EINECS 238-023-5
L-4-Chlorophenylalanine (CAS 14173-39-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10ClNO2 and a molecular weight of 199.634 g/mol. Key properties include a melting point of 235-238ºC, a boiling point of 339.5±32.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 159.1±25.1 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 14173-39-8
- Jingsj CID
- J-31775-9
- Molecular Formula
- C9H10ClNO2
- Molecular Weight
- 199.634 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 235-238ºC |
|---|---|
| Boiling Point | 339.5±32.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 159.1±25.1 °C |
| Exact Mass | 199.040009 |
| PSA | 63.32000 |
| LogP | 1.71 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.590 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H317 — May cause an allergic skin reaction
Activity & Biological Data
| Additional Information | [1]. Chasen J Greig, et al. Enhanced serotonin signaling increases intestinal neuroplasticity. J Surg Res. 2016 Nov;206(1):151-158. |
|---|
Customs & Trade Information
| HS Code | 2922499990 |
|---|---|
| Summary | HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of L-4-Chlorophenylalanine?
The CAS number of L-4-Chlorophenylalanine is 14173-39-8.
What are the molecular formula and molecular weight of L-4-Chlorophenylalanine?
L-4-Chlorophenylalanine has molecular formula C9H10ClNO2 and molecular weight 199.634 g/mol.
Is L-4-Chlorophenylalanine hazardous?
L-4-Chlorophenylalanine has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of L-4-Chlorophenylalanine?
For L-4-Chlorophenylalanine, Upstream Products: 4-Chlorocinnamic acid, DL-4-Chlorophenylalanine, (4-Chlorophenyl)acetaldehyde; Downstream Products: 4-Chloro-DL-phenylalanine methyl ester hydrochloride, 3-(4-Chlorophenyl)-2-oxopropanoic acid, 3-Amino-L-phenylalanine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "L-4-Chlorophenylalanine (CAS 14173-39-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31775-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.