L-Tyrosine with CAS 60-18-4
What is L-Tyrosine?
L-Tyrosine (CAS 60-18-4) is a naturally occurring, conditionally essential amino acid that the body synthesizes from phenylalanine. It is a direct precursor to several critical neurotransmitters and hormones — including dopamine, norepinephrine, epinephrine, and the thyroid hormones T3 and T4 — making it one of the most physiologically significant amino acids in human biochemistry.
As a white crystalline powder with the molecular formula C₉H₁₁NO₃, L-Tyrosine is sparingly soluble in water and practically insoluble in organic solvents. Its zwitterionic structure at physiological pH gives it stable handling characteristics.
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Product Advantages
- Free-Form Amino Acid: Rapidly absorbed and bioavailable for immediate neurotransmitter support
- Cognitive Performance: Supports mental focus, alertness, memory, and executive function
- Stress Support: Helps maintain a healthy stress response and emotional balance
- Mood Enhancement: Supports healthy neurotransmitter production for positive mood
- Athletic Performance: Supports focus and mental clarity during intense training
- Regulatory Compliant: USP, EP certified; approved by FDA as a dietary supplement ingredient
L-Tyrosine Quick details
- Chemical Name:L-Tyrosine
- CAS No.: 60-18-4
- EINECS: 200-460-4
- Molecular Formula: C9H11NO3
- Molecular weight: 181.19
- Appearance: White crystalline powder
- Assay: 98.5%-101.5%
- Synonyms:L-TYROSINE (13C9,D7,15N);L-TYROSINE (PHENOL-18O);3,3-D2);L-TYROSINE (RING-2,6-D2, 2-D);L-TYROSINE (USP/EP);L-TYROSINE BIOULTRA, >= 99.0% (NT);L-TYROSINE, REAGENT GRADE, >=98% (HP;(S)-3-(4-Hydroxyphenyl)alanine
L-Tyrosine Typical Properties
| Item | Specifications | Results |
| Appearance | White crystalline powder | Conform |
| Assay | 98.5%-101.5% | 99.9% |
| Specific rotation(α)D25 | -9.8º_ -11.2º(C=4,H2O) | -10.1º |
| Chloride | ≤400ppm | ＜400ppm |
| Sulfates | ≤400ppm | ＜400ppm |
| Iron | ≤30ppm | ＜10ppm |
| Lead | ＜3ppm | ＜3ppm |
| Cadmium | ＜1ppm | ＜1ppm |
| Mercury | ＜0.1ppm | ＜0.1ppm |
| Heavy metal | ≤15ppm | ＜15ppm |
| Arsenic | ≤1.5ppm | ＜1.5ppm |
| Loss on drying | ≤0.3% | 0.10% |
| Residue on ignition | ≤0.40% | 0.02% |
| Single impurity | ≤0.5% | ＜0.5% |
| Total impurities | ≤2.0% | ＜1% |
| Total plate count | ≤1000cfu/g | ＜1000cfu/g |
| Yeast&mould | ≤100cfu/g | ＜100cfu/g |
| Coliforms | In 25 g n.d. | Conforms |
| Salmonella | In 25 g n.d. | Conforms |
| Staphylococcus aureus | In 25 g n.d. | Conforms |
| Conclusion | The results conforms with USP39 standards | |
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L-Tyrosine Applications
- Pharmaceuticals: Used as an active pharmaceutical ingredient (API) and excipient in treatments for PKU (phenylketonuria), thyroid disorders, and neurological conditions.
- Nutraceuticals & Supplements: A key ingredient in nootropic stacks, cognitive performance supplements, stress-relief formulas, and mood-support capsules targeting dopamine pathways.
- Food & Beverages: Approved food additive used in functional beverages, protein-enriched foods, infant formula, and medical nutrition products.
- Sports & Performance: Incorporated into pre-workout and endurance products to support mental focus, reduce stress under physical load, and boost catecholamine levels during exercise.
L-Tyrosine Package & Storage
- Package: 25kg/drum
- Storage: Store in a cool place and keep it sealed to avoid direct sunlight.
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