99% Purity Glutathione Peptide CAS 70-18-8 Lyophilized Powder Research Grade for Research Use Only

Glutathione (GSH) is a naturally occurring tripeptide composed of three amino acids: glutamic acid, cysteine, and glycine. It is one of the most abundant low-molecular-weight thiols found in living cells. Glutathione is involved in cellular redox homeostasis and serves as a substrate for several enzymes, including glutathione peroxidases and glutathione S-transferases. The cysteine residue in glutathione contains a thiol group that can undergo reversible oxidation-reduction reactions, making it a key component of cellular thiol redox buffers.

Glutathione is supplied as a white to off-white lyophilized powder with ≥99% purity (tested by HPLC). Based on the price list, it is available in one dosage: GTT (1500mg per vial), with a standard pack size of 10 vials per box. Each vial is sealed with an aluminum-plastic flip-off cap and clearly labeled with product name, dosage, and batch number for easy identification and traceability.

For laboratory research purposes only. Not for human or veterinary use. Not for diagnostic or therapeutic applications.

This product is strictly manufactured under GMP-like conditions, ensuring batch-to-batch consistency and reliability. Each batch undergoes rigorous quality control, including HPLC for purity analysis, Mass Spectrometry for molecular weight confirmation, and appearance inspection. Water content and bacterial endotoxin levels are also tested to ensure product integrity. A Certificate of Analysis (COA) documenting all test results is provided with each batch, and third-party testing is available upon request.

Key Research Applications: Cellular redox homeostasis studies, thiol-disulfide exchange mechanism research, glutathione-dependent enzyme activity assays (glutathione peroxidase, glutathione S-transferase), oxidative stress pathway investigations, in vitro and in vivo laboratory experiments, and tripeptide-based research compound development.

Storage and Handling: Store lyophilized powder at -20°C, protected from light, and keep the vial tightly sealed to prevent moisture absorption. Glutathione is sensitive to oxidation and should be handled with care. Under these conditions, the product remains stable for 24 months from the date of manufacture. Once reconstituted with appropriate deoxygenated buffer, the solution should be used immediately or stored at -80°C in single-use aliquots. Avoid repeated freeze-thaw cycles and exposure to air, as glutathione readily oxidizes to glutathione disulfide (GSSG).

Glutathione is a high-purity (≥99% by HPLC) naturally occurring tripeptide supplied as a lyophilized powder, ideal for cellular redox homeostasis and thiol-based research applications. Each batch undergoes strict quality control, including HPLC and Mass Spectrometry analysis, ensuring batch-to-batch consistency and reliability. The product is in stock with a lead time of 3-5 business days after payment confirmation. Global shipping options include special line/express (40,under5kg, 14days)andUPS/FedEx(40,under5kg, 14days)andUPS/FedEx(70, 7-10 days), with free shipping available for orders over $1000. OEM services such as custom vial dosage and vial cap color are available for bulk orders.

Research Applications (for laboratory use only)

• Cellular redox homeostasis and thiol-disulfide exchange studies

• Glutathione peroxidase and glutathione S-transferase enzyme assays

• Oxidative stress pathway investigations

• Cellular thiol redox buffer characterization

• In vitro and in vivo laboratory experiments

• Tripeptide-based research compound development

Packaging Structure (From Outer to Inner)

Level Description

Outer Packaging Standard cardboard box

Middle Packaging Product box (branded/plain) containing a plastic box inside

Inner Packaging Plastic box holding 10 glass vials with foam or partition protection

Vial Clear glass vial, aluminum-plastic flip-off seal, labeled with product name, dosage, and batch number

Each Plastic Box Contains:
10 vials of peptide (1500mg per vial, based on your order)
Each vial is individually sealed with label
Foam or plastic partition to prevent vials from bumping into each other

Shipping Methods & Delivery Time
Shipping Method Cost Delivery TimeSpecial Line/ Express $40 (under 5kg) ~14 days
UK Special Line Same as above ~25 days (slightly delayed)
UPS / FedEx $70 7-10 daysShipping Policies

Policy Details
Free Shipping On orders over $1000
Remote Area Fee Some remote areas may incur an extra $35 (as determined by FedEx/UPS)
Lead Time 3-5 business days after payment confirmation

Frequently Asked Questions (FAQ)
Q1: Can I get a sample before placing an order?

Yes, samples are available upon request. Samples are not provided for free. You will need to pay for both the sample cost and the shipping fee. The sample fee will be deducted from your bulk order payment once you proceed with a formal order.

Q2: What payment methods do you accept?

We accept wire transfer (T/T), PayPal, and bank transfer. You may choose the most convenient method for you.

Q3: How and when can I receive my order after payment?

Small quantity orders: Shipped via international express (DHL, FedEx, UPS, etc.). Delivery time: 7-10 days after shipment.

Large quantity orders: Shipped by sea. Delivery time: 15-30 days depending on the destination port.

Special line: ~14 days delivery time (under 5kg, $40).

Q4: Can I use my own label or packaging?

Yes, OEM service is available for bulk orders. We can customize labels, vial dosage, vial cap color, and packaging according to your requirements. Please contact us for details.

Q5: What is your MOQ (Minimum Order Quantity)?

Retail MOQ: 1 kit/dosage/item

Customized packaging (e.g., custom vial size, cap color): 20-50 kits/dosage/item

Q6: Do you provide a Certificate of Analysis (COA) with each order?

Yes, each batch comes with a COA (HPLC purity test report). Third-party testing is also available upon request.

Q7: How should I store the peptide?

Store at -20°C, protected from light, and keep sealed. Once reconstituted, refrigerate at 2-8°C and use within the recommended timeframe.

Q8: What documents will be included with my shipment?

Commercial invoice, packing list, COA, and MSDS will be included with each shipment.