The company focuses on vitamins, amino acids, plant extracts, sweeteners and other series of products, which have been widely used in food, health food, cosmetics, feed, veterinary medicine and other industries.
Products
High Purity L-Phenylalanine Powder | ≥98.5% Feed, Food & Supplement Grade | CAS 63-91-2
Description:
Product Overview
L-Phenylalanine is an essential aromatic amino acid that cannot be synthesized by the human body and must be obtained through diet or supplementation. It plays a fundamental role as a precursor to key neurotransmitters and hormones. In the body, L-Phenylalanine is converted to L-Tyrosine, which is then used to synthesize dopamine, norepinephrine, and epinephrine — neurotransmitters critical for mood, cognitive function, and stress response. It can also be converted (through a separate pathway) to phenylethylamine, a substance that naturally occurs in the brain and appears to elevate mood.
L-Phenylalanine is also the precursor for the skin pigment melanin and the thyroid hormone thyroxine, and serves as a building block for proteins and enzymes throughout the body.
At Henan Liyin Biotech, we supply high-purity L-Phenylalanine in the form of a white crystalline powder, with a minimum purity of ≥98.5% (typically 98.5–101.5%), compliant with USP, EP, and FCC standards. Our product is available in Feed Grade, Food Grade, and Supplement Grade to serve applications across animal nutrition, human food, dietary supplements, and personal care.
Why Choose Our L-Phenylalanine?
Verified Purity: Assay ≥98.5% (typically 98.5–101.5% by HPLC), ensuring consistent potency for all applications
Multi-Standard Compliance: Meets USP, EP, and FCC specifications, providing global regulatory acceptance
Proven Safety Profile: GRAS (Generally Recognized as Safe) for use in food applications when properly used
Complete Traceability: Each batch is accompanied by a comprehensive Certificate of Analysis (COA)
Flexible Packaging: Available in packaging options from 1kg to bulk quantities
Key Functional Properties
Neurotransmitter Precursor & Mood Support
L-Phenylalanine serves as the primary precursor to L-Tyrosine, which is then converted into dopamine, norepinephrine, and epinephrine. These catecholamine neurotransmitters play essential roles in mood regulation, cognitive function, and the body's stress response. In one study, depressed people given L-phenylalanine experienced results comparable to those produced by an antidepressant. Research suggests that L-phenylalanine may help promote healthy mood and support cognitive function.
Cognitive Performance & Brain Health
By supporting neurotransmitter production, L-phenylalanine contributes to brain health and cognitive performance. It supports healthy cognitive function and provides protection for brain cells by promoting a healthy inflammatory response, inhibiting oxidative stress, and supporting healthy neuronal growth.
Melanin & Hormone Precursor
L-Phenylalanine serves as a precursor for melanin, the skin pigment, as well as thyroxine (thyroid hormone). Its ability to absorb ultraviolet radiation also makes it useful in research applications for quantifying protein content.
Pain Modulation (D-Phenylalanine)
While L-Phenylalanine is the naturally occurring form, a synthetic form (D-Phenylalanine) has been studied for its potential role in pain management by inhibiting the enzymes that break down the body's natural painkillers.
Quality Assurance & Documentation
All batches undergo rigorous quality control, including:
Assay by HPLC: ≥98.5% (typically 98.5–101.5%)
Heavy Metal Screening: Lead ≤ 5 mg/kg, total heavy metals ≤ 10 ppm
Specific Rotation: Verified against USP/EP/FCC specifications
Loss on Drying and Residue on Ignition: To ensure stability and purity
We provide complete documentation with every shipment, including Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), and Allergen Statement. Our GMP-certified production ensures batch-to-batch consistency and traceability.
Sourcing Support
We offer flexible packaging and can provide samples for pre-shipment testing. Our technical team is available to assist with grade selection (Feed, Food, or Supplement Grade), application guidance, and custom formulation support — from R&D trials to full-scale commercial production.
Contact us to discuss your specific L-Phenylalanine requirements or to request samples for your formulations.
Parameters:
-
Parameter
Specification
Product Name
L-Phenylalanine
CAS Number
63-91-2
Molecular Formula
C₉H₁₁NO₂
Molecular Weight
165.19 g/mol
Assay (Purity)
≥ 98.5% (typically 98.5–101.5%)
Appearance
hite crystalline powder
Available Grades
Feed Grade, Food Grade, Supplement Grade
Standards
USP, EP, FCC
Specific Rotation
[α]²⁰/D -33.2° to -35.2°
pH (1g/100mL)
5.4 – 6.0
Loss on Drying
≤ 0.3%
Residue on Ignition
≤ 0.1%
Heavy Metals
≤ 10 ppm (total heavy metals as Pb)
Lead (Pb)
≤ 5 mg/kg
Chlorides
≤ 0.03%
Sulfates
≤ 0.03%
Melting Point
270-275°C (dec.)
Water Solubility
1-5 g/100 mL at 25°C
Packaging Options
1kg, 5kg, 25kg (or as per request)
Documentation
Full COA, MSDS, Allergen Statement
Storage Conditions
Store in a cool, dry place, protected from light. Stable under recommended storage. Incompatible with strong oxidizing agents
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L-Phenylalanine is an essential aromatic amino acid that serves as the primary precursor to L-Tyrosine, which is converted into key neurotransmitters including dopamine, norepinephrine, and epinephrine — critical for mood regulation, cognitive function, and the body's stress response. It also plays a role in melanin production and thyroid hormone synthesis. Available in Feed, Food, and Supplement Grades with ≥98.5% purity. Contact us for more information.
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Dietary Supplements
L-Phenylalanine is a popular ingredient in supplements targeting mood support, cognitive function, and overall wellness. Its role as a precursor to dopamine and norepinephrine makes it valuable in formulations for:
Mood & Stress Support: May help promote healthy mood and support the body's stress response
Cognitive Function: Supports healthy cognitive performance and brain health
Overall Wellness: As an essential amino acid, it is included in many amino acid blend formulations
Typical Dosage: L-Phenylalanine has been used in amounts up to 3.5 grams per day. For best results, phenylalanine should be taken between meals, as protein in food can interfere with its uptake into the brain. DLPA (a 50/50 mixture of D- and L-forms) has been used in amounts ranging from 75–1,500 mg per day.
Important Precautions: Not to be taken by persons with phenylketonuria (PKU). Not to be co-administered with MAO inhibitors (antidepressants).
Food & Beverage
L-Phenylalanine is widely used in the food industry as a nutritional supplement, flavor enhancer, and flavoring agent (FEMA 3585).
Key Applications:
Flavor Enhancement: Used as a flavoring agent or adjuvant; can enhance savory (umami) notes in food products
Food Fortification: Used to enhance the amino acid profile of processed foods, cereals, and protein-based products
Sweetener Precursor: One of the largest uses of L-phenylalanine is as a precursor to the sweetener aspartame
Functional Foods: Added to protein bars, energy supplements, and other functional foods to boost nutritional value
Regulatory Status: L-Phenylalanine is permitted as a food additive and nutrient supplement under FDA regulations (21 CFR 172.320) with GRAS status when properly used. FCC grade is suitable for food, beverage, and nutritional supplement applications.
Usage Levels: FDA limits use to 5.8% of total protein in food products. FEMA usage levels include: baked goods up to 110 mg/kg; chewing gum up to 268 mg/kg; dairy products up to 66 mg/kg.
Animal Feed
L-Phenylalanine is authorized as a nutritional feed additive for all animal species. The EFSA has evaluated L-phenylalanine for use in animal nutrition and concluded it is safe for target species, consumers, and the environment when used appropriately.
Key Applications:
Nutritional Supplement: Provides an essential amino acid source in animal diets
Growth Performance: Supports growth and development in livestock
Broad Species Use: Authorized for use in poultry, swine, and other livestock
Recommended Inclusion: Levels vary by species and production stage. Our Feed Grade L-Phenylalanine is formulated for optimal dispersion in premixes and pelleted feeds.
Personal Care & Cosmetics
L-Phenylalanine is used in personal care formulations for its skin-conditioning, hair-conditioning, and fragrance properties.
Key Applications:
Hair Conditioning: Functions as a hair conditioning agent
Skin Conditioning: Used in skin care products for its skin-conditioning properties
Fragrance: May contribute to product fragrance profiles
Suntan Products: Used in suntan and sun care formulations
Key words:
High Purity L-Phenylalanine Powder | ≥98.5% Feed, Food & Supplement Grade | CAS 63-91-2
Function:
L-Phenylalanine is an essential aromatic amino acid that serves as the primary precursor to L-Tyrosine, which is converted into key neurotransmitters including dopamine, norepinephrine, and epinephrine — critical for mood regulation, cognitive function, and the body's stress response. It also plays a role in melanin production and thyroid hormone synthesis. Available in Feed, Food, and Supplement Grades with ≥98.5% purity. Contact us for more information.
Application：
Dietary Supplements
L-Phenylalanine is a popular ingredient in supplements targeting mood support, cognitive function, and overall wellness. Its role as a precursor to dopamine and norepinephrine makes it valuable in formulations for:
Mood & Stress Support: May help promote healthy mood and support the body's stress response
Cognitive Function: Supports healthy cognitive performance and brain health
Overall Wellness: As an essential amino acid, it is included in many amino acid blend formulations
Typical Dosage: L-Phenylalanine has been used in amounts up to 3.5 grams per day. For best results, phenylalanine should be taken between meals, as protein in food can interfere with its uptake into the brain. DLPA (a 50/50 mixture of D- and L-forms) has been used in amounts ranging from 75–1,500 mg per day.
Important Precautions: Not to be taken by persons with phenylketonuria (PKU). Not to be co-administered with MAO inhibitors (antidepressants).
Food & Beverage
L-Phenylalanine is widely used in the food industry as a nutritional supplement, flavor enhancer, and flavoring agent (FEMA 3585).
Key Applications:
Flavor Enhancement: Used as a flavoring agent or adjuvant; can enhance savory (umami) notes in food products
Food Fortification: Used to enhance the amino acid profile of processed foods, cereals, and protein-based products
Sweetener Precursor: One of the largest uses of L-phenylalanine is as a precursor to the sweetener aspartame
Functional Foods: Added to protein bars, energy supplements, and other functional foods to boost nutritional value
Regulatory Status: L-Phenylalanine is permitted as a food additive and nutrient supplement under FDA regulations (21 CFR 172.320) with GRAS status when properly used. FCC grade is suitable for food, beverage, and nutritional supplement applications.
Usage Levels: FDA limits use to 5.8% of total protein in food products. FEMA usage levels include: baked goods up to 110 mg/kg; chewing gum up to 268 mg/kg; dairy products up to 66 mg/kg.
Animal Feed
L-Phenylalanine is authorized as a nutritional feed additive for all animal species. The EFSA has evaluated L-phenylalanine for use in animal nutrition and concluded it is safe for target species, consumers, and the environment when used appropriately.
Key Applications:
Nutritional Supplement: Provides an essential amino acid source in animal diets
Growth Performance: Supports growth and development in livestock
Broad Species Use: Authorized for use in poultry, swine, and other livestock
Recommended Inclusion: Levels vary by species and production stage. Our Feed Grade L-Phenylalanine is formulated for optimal dispersion in premixes and pelleted feeds.
Personal Care & Cosmetics
L-Phenylalanine is used in personal care formulations for its skin-conditioning, hair-conditioning, and fragrance properties.
Key Applications:
Hair Conditioning: Functions as a hair conditioning agent
Skin Conditioning: Used in skin care products for its skin-conditioning properties
Fragrance: May contribute to product fragrance profiles
Suntan Products: Used in suntan and sun care formulations
About Us
Henan Liyin Biotech Co.,Ltd
We are is established in 2024,located in Zhengzhou,on the banks of the Yellow River-the revered “Mother River “of China .As a specialized supplier of human nutrition and animal health products ,the company focuses on a range of products including vitamins ,amino acids ,plant extracts ,and sweeteners,which are widely used in industries ,such as food ,health supplements,cosmetics ,feed and veterinary medicine .By integrating global product resources with the needs of international clients ,Liyin Biotech provides premium products and professional services tailored to each customer .
FAQ
How to contact ?
You can contact with us by Whatsapp:+86 15824830539, the Average Response Time is 0-4h on Work time, <24h on Non-worktime.
For every inquiry, our sales will provide the one-for-one service for you.
How about the payment terms ?
Normal orders: Company account ;Sample/small orders: Paypal(The 5-10% extrafee).About the payment term, we will negotiate alone.
How to get the samples ?
At the first time ,we can provide you the normal product <30g free sample
How to confirm the Product Quality before placing orders?
1st, you can get free samples for some products, just paythe basic cost for us.
2nd,Also you can send the specification or your quest tous, we will customize the products for you.3rd,We emphasis that our whole company make a livingwith organic chemical and customers, we absolutelyimpossible to sale any fake goods, unqualified goods, it isshame! And None False certificate/lie/illegal thing in oursales net!
Which kind of payment do you accept?
- As usually we use company account ,T/T in advance ,or at least 30% T/T in advance ,the balance can be paid by the copy of B/L
- For some countrys we can accept L/C at sight & DP at sight
- For smaples we can use Paypal (The 5-10% extra fees) or other ways
About the payment term, we will negotiate alone.
How about the shipment ?
1>For bulk goods ,we can use contaioner by sea ,1&20 and 1&40 contaioner
2>For urgently and expensive goods ,we can arrange the air lines for customers choose ,or can as customer required
3>For samples or small quantity goods ,we can use Fedex or other express ways
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As a specialized supplier of human nutrition and animal health products ,the company focuses on a range of products including vitamins ,amino acids ,plant extracts ,and sweeteners,which are widely used in industries ,such as food ,health supplements,cosmetics ,feed and veterinary medicine .
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