ShineHerb
1 / 2
L-Tryptophan (CAS No. 73-22-3) is an essential aromatic amino acid that cannot be synthesized by the human body and must be obtained from external sources. It is also the only amino acid containing an indole ring structure.
It acts as a core precursor for the synthesis of serotonin, melatonin and niacin (Vitamin B3) in the human body. Meanwhile, it participates in protein synthesis, makes up for insufficient amino acids in grains and dairy products, and enhances daily nutritional intake.
Produced by biological fermentation with purity ≥99%, free of impurities from chemical synthesis.
Good water solubility; compatible with magnesium, glycine and creatine. Suitable for tablets, powder blends, oral liquids and other dosage forms.
Free samples available. Compliant with ISO and FDA standards.
| Product Name | CAS No. |
|---|---|
| L-Cysteine | 52-90-4 |
| N-Acetyl-L-Cysteine | 616-91-1 |
| L-Cysteine hydrochloride monohydrate | 7048-04-6 |
| L-Cysteine hydrochloride anhydrous | 52-89-1 |
| S-Carboxymethyl-L-Cysteine | 638-23-3 |
| Item | Specifications | Results |
|---|---|---|
| Appearance | White crystals or crystalline powder | White crystals or crystalline powder |
| Assay, % | 98.5～101.5 | 99.51 |
| pH value | 5.5-7.0 | 5.83 |
| Specific optical rotation | -29.4°~-32.8° | -30.8° |
| Loss on drying, % | ≤0.30 | 0.21 |
| Residue on ignition, % | ≤0.10 | 0.05 |
| Chloride (as Cl), % | ≤0.05 | <0.05 |
| Sulphate (as SO4), % | ≤0.03 | ＜0.03 |
| Iron (as Fe), % | ≤0.003 | ＜0.003 |
| Heavy metals (as Pb), % | ≤0.0015 | ＜0.0015 |
| Conclusion: This product conforms to requirements of USP32 grade standard. | ||
Dietary Supplements:
L-Tryptophan is used in sleep-aid capsules and mood-soothing tablets, often combined with Magnesium L-Threonate and Magnesium Glycinate for calming complex formulas.
Fortified Functional Foods:
L-Tryptophan can be added to infant formula milk powder and grain meal replacement powder to balance amino acid profiles.
Packing Method Spec:
| Weight | Packing Method |
|---|---|
| 1kg | Bag/kg, box outside (double plastic bag + Aluminum foil bag inside) |
| 10kgs, 25kg or more | By Drums or carton (2 layers plastic bag inside) |
Delivery Method Spec:
| Weight | Delivery Method | Delivery Time | Destination |
|---|---|---|---|
| 1kg-25kgs | EMS, DHL, UPS, Fedex | 3-7 days | Door to door |
| 25kgs-100kgs | DHL, FedEx, by Air | 3-7 days | Door to door (to Airport by Air) |
| More than 100kgs | By Air | 3-7 days | Door to Airport |
| By Sea | 10-35 days | Door to port |
Q1: What is the purity and production process of your L-Tryptophan?
A1: Our L-Tryptophan is produced via a biological fermentation high-purity process. It guarantees a purity of ≥99% and is completely free of chemical synthesis impurities.
Q2: What quality standard does your L-Tryptophan conform to?
A2: According to the Certificate of Analysis, our product fully conforms to the USP32 grade standard and complies with ISO and FDA standards.
Q3: What are the main applications of L-Tryptophan?
A3: It is primarily used in dietary supplements (such as sleep-aid capsules and mood-soothing tablets) and fortified functional foods (including infant formula milk powder and grain meal replacement powder).
Q4: Is L-Tryptophan compatible with other active supplement ingredients?
A4: Yes, L-Tryptophan exhibits excellent stability and compatibility with magnesium (such as Magnesium L-Threonate and Magnesium Glycinate), glycine, and creatine, making it ideal for multi-ingredient formulas.
Q5: How is L-Tryptophan packaged for shipment?
A5: We pack 1kg in double plastic bags and an aluminum foil bag inside with an outer box. For bulk quantities of 10kg, 25kg or more, we package using drums or cartons with double plastic bags inside.
Q6: What delivery methods and delivery times do you offer?
A6: We offer multiple shipping methods including EMS, DHL, UPS, FedEx, Air, and Sea. Delivery times range from 3-7 days for express/air shipments to 10-35 days for sea transport, depending on the weight and destination.
