4-Methyl-L-phenylalanine
Also known as: (2S)-2-amino-3-(4-methylphenyl)propanoic acid, (S)-2-amino-3-p-tolyl-propionic acid, L-4-Methylphenylalanine, p-Methyl-L-phenylalanine, H-Phe(4-Me)-OH, L-4-Me-Phe-OH, 4-Methylphenylalanine, RARECHEM BK PT 0067
4-Methyl-L-phenylalanine (CAS 1991-87-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H13NO2 and a molecular weight of 179.216 g/mol. Key properties include a melting point of 271 °C(dec.), a boiling point of 323.5±30.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 149.5±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1991-87-3
- Jingsj CID
- J-1413480-6
- Molecular Formula
- C10H13NO2
- Molecular Weight
- 179.216 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 271 °C(dec.) |
|---|---|
| Boiling Point | 323.5±30.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 149.5±24.6 °C |
| Exact Mass | 179.094635 |
| PSA | 63.32000 |
| LogP | 1.57 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.568 |
| Storage Conditions | Store at RT. |
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 4-Methyl-L-phenylalanine?
The CAS number of 4-Methyl-L-phenylalanine is 1991-87-3.
What are the molecular formula and molecular weight of 4-Methyl-L-phenylalanine?
4-Methyl-L-phenylalanine has molecular formula C10H13NO2 and molecular weight 179.216 g/mol.
What are the upstream and downstream products of 4-Methyl-L-phenylalanine?
For 4-Methyl-L-phenylalanine, Upstream Products: (Z)-2-Methyl-4-(4-methylbenzylidene)oxazol-5(4H)-one, p-Tolualdehyde, 4-Methyl-DL-phenylalanine; Downstream Products: (R)-3-Amino-3-(4-methylphenyl)propanoic acid, 4-Methylcinnamic acid, 4-Methyl-DL-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. "4-Methyl-L-phenylalanine (CAS 1991-87-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1413480-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.