L-Cysteine Supplier in Malaysia
- Also known as
- Cysteine
L-Cysteine supplier for food, feed, pharmaceutical, nutraceutical and fermentation users in Malaysia. Cysteine is the general amino-acid name, while this page covers free L-Cysteine, the L-isomer identified by CAS 52-90-4 and supplied as a white crystalline powder.
Commercial choices include food grade for bakery and flavour systems, feed grade, pharmaceutical or nutraceutical grade, and high-purity material for fermentation and cell-culture media. Assay, specific rotation, moisture, related substances and microbiological limits vary by application.
Food manufacturers specify L-Cysteine for selected dough and flavour processes, while feed, pharmaceutical and media formulators use suitable ingredient grades under their own product specifications. L-cystine, cysteine hydrochloride and finished supplements remain separate products.
Send the required grade, assay and impurity specification, quantity and delivery location with your enquiry. Availability, packing, documentation and delivery timing are confirmed with the quotation.
- CAS number
- 52-90-4
- Grade
- food, feed, pharmaceutical, fermentation
- Appearance
- white crystalline powder
L-Cysteine grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Food-grade L-Cysteine | white crystalline powder | — | Bakery, flavour and food-processing formulations that specify free L-Cysteine as a dough-processing aid or amino-acid ingredient. | Confirm the required pack format with the quotation. |
| Feed-grade L-Cysteine | white crystalline powder | — | Animal and aquaculture feed or premix formulations where the nutritionist specifies free L-Cysteine and feed-grade impurity controls. | Confirm the required pack format with the quotation. |
| Pharmaceutical and nutraceutical grade L-Cysteine | high-purity crystalline powder | — | Pharmaceutical, nutraceutical and amino-acid formulations that require defined L-isomer identity, assay and related-substance limits. | Confirm the required pack format with the quotation. |
| Fermentation and cell-culture grade L-Cysteine | high-purity crystalline powder | — | Fermentation media, cell-culture media and laboratory formulations that specify L-Cysteine purity and controlled process impurities. | Confirm the required pack format with the quotation. |
How to buy L-Cysteine from ChemTrade
Request a quote for L-Cysteine
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Identity | free L-Cysteine, L-isomer, CAS 52-90-4 | — |
| Appearance | white crystalline powder | — |
| Assay | specified for the selected food, feed or high-purity grade | — |
| Specific rotation | grade-specific limit used to confirm L-isomer identity | — |
| Moisture, residue and pH | limits selected for the intended formulation or process | — |
| Related substances and microbiological limits | specified where required for food, feed or pharmaceutical use | — |
L-Cysteine applications
Safety and handling
Keep L-Cysteine sealed in a cool, dry place and protect the powder from moisture, air exposure and contamination. Minimise dust during handling and follow the safety information supplied for the quoted grade.
Common questions about L-Cysteine
Is cysteine the same as L-Cysteine?
Cysteine is the general amino-acid name, while L-Cysteine identifies the L-isomer covered by this page under CAS 52-90-4. State the L-isomer and free amino-acid requirement so the material is identified correctly.
Is L-Cysteine the same as L-cystine?
No. L-cystine is the oxidised disulphide formed from two cysteine units and is a separate compound with its own identity and specification. It should not be quoted as a grade or alias of free L-Cysteine.
Is L-Cysteine hydrochloride the same as free L-Cysteine?
No. L-Cysteine hydrochloride and its hydrated forms are salts or derivatives with different composition and handling. State free L-Cysteine if CAS 52-90-4 is required, or name the hydrochloride form separately.
Which L-Cysteine grade should a buyer request?
Food grade serves bakery and flavour work, feed grade serves animal nutrition, pharmaceutical or nutraceutical grade has tighter purity controls, and fermentation grade is selected for media and laboratory processes.
How is L-Cysteine used in bakery formulations?
Food formulators use L-Cysteine as a dough-processing aid in selected bakery systems. The required grade and use level are set by the recipe, flour, process and finished-product target rather than by a universal dose.
What specifications should be provided for L-Cysteine?
Include free L-Cysteine identity, assay, specific rotation, moisture, pH, residue, related substances and any microbiological limits. Add the application, quantity and delivery location for a complete quotation.
Does this page cover finished L-Cysteine supplements?
No. This is a B2B raw-ingredient page for L-Cysteine powder used by manufacturers. Finished retail capsules, tablets, blends and branded supplements are separate products and are not grades or aliases here.
Can packing and product documents be requested?
Yes. List the preferred pack format and documents needed for ingredient qualification. Suitable packing and available documentation are confirmed for the selected grade with the quotation.
What details are needed for an L-Cysteine price enquiry?
Send the grade, assay and full specification, intended use, quantity and delivery location. Include packing and documentation requirements so the offer covers the correct free L-Cysteine material.