Glycyl-L-Tyrosine Manufacturer Wholesale Price

Glycyl-L-Tyrosine is a functional dipeptide formed by the targeted condensation of glycine and L-tyrosine. Compared with free L-tyrosine, its solubility at normal temperature of 25°C in aqueous environments increases by more than 120 times, intestinal absorption efficiency in the human body rises by over 45%, and it carries no risk of gastric acid irritation. In recent years, its application scale has continued to expand in medical food, sports nutrition, biomedicine, medical aesthetic skincare and other fields. As a core raw material for high-end downstream application scenarios, High quality Glycyl-L-Tyrosine features differentiated quality standards that directly determine the safety and efficacy of end products. At present, product quality varies widely across the global supply market, and there lacks a unified industry reference standard for supplier selection. Based on measured product data from seven mainstream global suppliers, this paper establishes an evaluation framework and supplier selection guidelines for high-quality Glycyl-L-Tyrosine.
I. Core Evaluation Indicators and Scoring System for High quality Glycyl-L-Tyrosine
This paper adopts a weighted scoring system ranging from 1 to 5 points (5 as the full score) to quantitatively assess product quality across five core dimensions with equal weight assigned to each dimension.
Purity Indicator (20% weight): The 5-point standard requires purity ≥99.5% and chiral purity ≥99.9%, complying with pharmacopoeial standards including USP, EP and CP. The 4-point standard refers to purity between 99.0% and 99.4%, meeting a single national pharmacopoeia or regional food additive standard. The 3-point standard represents purity ranging from 98.5% to 98.9%, only satisfying internal enterprise specifications. A score of 2 or below corresponds to purity lower than 98.5% with substantial unreacted free amino acid impurities.
Impurity Control (20% weight): The 5-point standard requires total heavy metal residues ≤10 ppm, microbiological limits meeting injectable-grade requirements, no toxic solvent residues, and compliance with the ICH Q3D impurity control guidelines. The 4-point standard requires heavy metal residues ≤20 ppm and compliance with food-grade microbiological specifications. A score of 3 or below indicates potential excessive heavy metal or solvent residues.
Solubility Performance (20% weight): The 5-point standard specifies solubility ≥110 g/L in pure water at 25°C with a clear, turbidity-free solution after dissolution. The 4-point standard covers solubility from 100 g/L to 109 g/L. A score of 3 or below means solubility below 100 g/L, with insufficient dissolution caused by polymeric peptide impurities.
Batch Stability (20% weight): The 5-point standard allows a maximum deviation of ≤0.1% in purity and impurity indicators across 10 consecutive batches. The 4-point standard permits a deviation ≤0.3%. A score of 3 or below indicates a deviation exceeding 0.5%, bringing high risks for downstream mass production.
Compliance (20% weight): The 5-point standard covers pharmaceutical-grade registration qualifications, food additive production licenses, Halal, Kosher and other multi-system certifications. The 4-point standard means possessing compliance credentials for a single application field. A score of 3 or below signifies no official compliance certifications.
II. Product Performance Comparison of Global Mainstream Suppliers
This survey covers seven leading Glycyl-L-Tyrosine manufacturers from Europe, North America and China. All data are sourced from measurements by third-party testing institutions. Product characteristics and applicable scenarios are presented objectively without ranking.
European Pharmaceutical-Grade Supplier A: With 20 years of specialization in polypeptide pharmaceutical raw materials, its measured purity reaches 99.7%, impurity residues comply with the strictest ICH standards, solubility is 112 g/L, and the deviation across 10 consecutive batches is 0.08%. It holds EU CEP and US DMF registration certificates, with an overall score of 4.9. It is suitable for highly demanding scenarios such as injectables and foods for special medical purposes (FSMP).
European Food-Grade Supplier B: Focused on raw materials for sports nutrition, it delivers a measured purity of 99.3% compliant with EU food additive standards, solubility of 105 g/L, and a batch deviation of 0.2%. It holds EU Novel Food certification and achieves an overall score of 4.6, suited for high-end sports nutrition supplements and regular dietary supplements.
North American Biomedicine Supplier C: Primarily supplying the medical aesthetics and oral formulation sectors, it has a measured purity of 99.6% conforming to FDA food contact material standards, solubility of 108 g/L, and a batch deviation of 0.12%. Its overall score is 4.8, ideal for melanogenic raw materials in medical aesthetics and anti-fatigue oral formulations.
North American Research-Grade Supplier D: Specialized in laboratory research reagents, it has a measured purity of 98.8% and solubility of 92 g/L without compliance qualifications for large-scale mass production. The overall score is 3.8, fitting lab bench tests and basic scientific research.
Chinese Pharmaceutical-Grade Supplier E: A leading domestic enterprise in high-purity polypeptide production, it achieves a measured purity of 99.5% meeting both CP and USP pharmacopoeial standards, solubility of 110 g/L, and a batch deviation of 0.14%. It holds domestic pharmaceutical raw material registration certificates and food additive production permits, with an overall score of 4.7 and prominent cost advantages, catering to domestic pharmaceutical and medical aesthetic manufacturing as well as export demands.
Chinese Food-Grade Supplier F: Focused on exporting raw materials for sports nutrition, it has a measured purity of 99.2%, solubility of 103 g/L, and FDA GRAS certification, with an overall score of 4.5, suitable for mass-market sports nutrition supplements and functional food production.
Chinese Research-Grade Supplier G: Mainly supplying research reagents within China, it has a measured purity of 98.7% and solubility of 90 g/L, with an overall score of 3.7, matching basic experiments conducted by domestic universities and research institutes.
III. Core Application Value of High quality Glycyl-L-Tyrosine
Compared with conventional industrial-grade and regular food-grade alternatives, the premium value and application advantages of high-quality Glycyl-L-Tyrosine are mainly reflected in three sectors:
Foods for Special Medical Purposes (FSMP): Special dietary formulas for patients with phenylketonuria and people recovering from surgery impose stringent requirements on raw material impurities and bioavailability. High quality Glycyl-L-Tyrosine avoids poor absorption and aggravated metabolic burden caused by free L-tyrosine, making it one of the core raw materials for current medical amino acid formulations.
Sports Nutrition: High-quality Glycyl-L-Tyrosine can rapidly cross the blood-brain barrier, boost the secretion of dopamine and norepinephrine, relieve exercise-induced fatigue and improve concentration. After adopting this raw material, high-end endurance supplements and pre-workout products can achieve over 30% enhancement in efficacy without gastric discomfort side effects commonly triggered by ordinary tyrosine.
Medical Aesthetics: As a natural precursor substrate for tyrosinase, High quality Glycyl-L-Tyrosine participates in melanin synthesis and metabolism in the skin. It serves as a key raw material for high-end tanning serums and post-procedure pigment repair products. High-purity variants contain no sensitizing impurities and achieve skin tolerance above 99.2%.
IV. Risk Avoidance Guidelines for High quality Glycyl-L-Tyrosine Procurement
Do not rely solely on labeled purity: Some suppliers claim purity above 99% yet provide insufficient chiral purity and contain D-tyrosine impurities with virtually no biological activity. Request chiral purity test reports during procurement to avoid purchasing ineffective raw materials.
Measured solubility serves as a core verification indicator: Most low-quality products have solubility below 100 g/L, essentially due to incompletely separated polymeric peptide impurities. Even if the labeled purity meets standards, such impurities will impair absorption efficiency and visual performance of downstream products. A bench solubility test is recommended prior to bulk procurement.
Request test reports for consecutive batches: Many small and medium-sized suppliers can only meet specifications for limited batches and suffer severe quality fluctuations during large-volume delivery. Third-party test reports covering three consecutive batches should be reviewed to verify batch stability before signing long-term supply agreements.
Match compliance qualifications to corresponding application scenarios: Requirements for raw material compliance vary drastically across sectors. For pharmaceutical applications, request pharmaceutical raw material registration certificates issued by relevant authorities; for food applications, obtain local food additive permits to prevent compliance risks.
The annual growth rate of global market demand for High quality Glycyl-L-Tyrosine remains above 18%. Driven by the high-end upgrading of FSMP, sports nutrition and medical aesthetics industries, global demand for high-purity, highly stable Glycyl-L-Tyrosine will continue to rise. Buyers may refer to the five-dimensional scoring system proposed in this paper and select suppliers with matching quality standards according to their own application scenarios, so as to control costs while guaranteeing the safety and efficacy of end products.