Description
HIGH-PURITY SPECIALTY INGREDIENT
L-DOPA (Levodopa)
L-DOPA (levodopa) is supplied at 99.0% as a bulk active substance for pharmaceutical and industrial use. It is a licensed medicinal substance in most markets, not a food or dietary supplement ingredient: buyers must hold the appropriate licences and end-use authorisations for their destination market before ordering, and we release the batch only against an agreed end-use declaration. Identity and purity are released by HPLC with the impurity profile reported per batch, and the material is handled protected from light and moisture.
COA-Backed Specification
| Identity | L-DOPA (Levodopa) |
|---|---|
| Form and colour | Fine white crystalline powder |
| Assay | 99.0% |
| Method | HPLC |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0%; result 4.60% |
| Ash | <=5.0%; result 2.70% |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Representative batch | LXGZ260622 |
| Manufacture date | 22 Jun 2026 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
L-DOPA is a regulated active substance rather than a nutraceutical raw material. Before quoting we confirm the buyer’s licence, the declared end use and the destination market, and the batch is released against an end-use declaration rather than as a food ingredient. Documentation supplied with each shipment: COA, specification sheet, safety data sheet and the batch-specific impurity profile.
- Regulated active substance: purchase requires the appropriate licence and end-use authorisation for the destination market.
- Assay 99.0% by HPLC, with the related-substance and impurity profile reported per batch.
- Handled and packed protected from light, heat and moisture.
- Released against an agreed end-use declaration, not as a food or supplement ingredient.
- Documentation: COA, specification sheet, safety data sheet and batch impurity profile.
- We do not supply this material for direct consumer use or for any unapproved application.
How This Grade Differs
L-DOPA (Levodopa) is often quoted alongside materials of the same or a closely related name at a different purity or in a different form. The two are not interchangeable: purity, residual solvent profile and physical form all change the buyer’s processing yield. Compare quotations on the released assay and the reported impurity profile, not on the headline percentage alone.
Compare these related grades before approval:
For a substitution review, compare botanical identity, plant part, assay target, analytical method, physical form and the current offered-batch COA.
Application Areas
- Hard capsules and two-piece capsule filling
- Stick packs and single-serve sachets
- Powder blends and dry mixes
- Beverage and liquid concentrate systems, subject to the buyer’s process validation
Packaging and Delivery
- Evaluation sample typically 10-20 g, subject to stock
- Regular MOQ typically 1 kg
- 1 kg foil bag or 25 kg fibre drum with inner food-grade liner
- Custom packing and private-label options subject to confirmation
- Typical lead time 7-15 working days after deposit
Quality and Documentation
Representative batch LXGZ260622 supports the specification table above. Use the cited record for preliminary comparison and request the offered-lot COA for final technical approval. Batch COA, specification sheet, agreed third-party testing and export documents are available for buyer verification.
Frequently Asked Questions
What specification defines L-DOPA (Levodopa) Powder 99%?
For L-DOPA (Levodopa) Powder 99%: 99.0%, tested by HPLC.
Which identity details must remain consistent?
For L-DOPA (Levodopa) Powder 99%: match L-DOPA (Levodopa) across the quotation, specification and offered-batch COA. The offered grade is 99.0%.
How is batch-specific approval completed?
For L-DOPA (Levodopa) Powder 99%: the page cites representative batch LXGZ260622. Final approval requires the current lot’s identity, specification results and relevant dates.
What forms part of the technical review?
For L-DOPA (Levodopa) Powder 99%: do not assess 99.0% in isolation; particle size, moisture or drying data and market-relevant safety limits can also affect acceptance.
Are you a manufacturer or a trading company?
LongBio is Shaanxi Longsheng Biotechnology Co., Ltd., a direct manufacturer of botanical extracts and functional ingredients integrating R&D, production and export support. Factory review can be arranged by video or an on-site visit.
Can I request the current batch COA before ordering?
Yes. Request the applicable current or representative COA and compare product identity, method, limits and results before approving a purchase order.
What is the minimum order quantity?
The regular MOQ is typically 1 kg. An evaluation sample of 10-20 g can usually be arranged before a formal order, subject to stock.
Do you support custom specifications or packing?
Alternative assay targets, particle size, packing and private-label requirements can be reviewed case by case, subject to production feasibility and a revised written specification.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
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