Origin 99.0% Purity Delta Sleep-Inducing Peptide DSIP 5mg 10mg Freeze-dried Powder, CAS#62568-57-4 DS5 DS10 DS15

Name: Yuki
Wechat：+852-5341-6086

Whatsapp:+852-5341-6086

Email：bai@tianlei1328.cn

   DSIP has been described as a sleep-promoting substance. There is a modulating effect on sleep and wake functions with a greater activity in circumstances where sleep is disturbed. There are minimal effects in healthy subjects who are not suffering from sleep disturbance.

    Delta sleep-inducing peptide, abbreviated DSIP, is a neuropeptide that when infused into the mesodiencephalic ventricle of recipient rabbits induces spindle and delta EEG activity and reduced motor activities. Its aminoacid sequence is TRP-ALA-GLY-GLY-ASP-ALA-SER-GLY-GLU However, the gene is unknown[citation needed], raising serious questions regarding the actual existence of this peptide in nature.

1. Ultra-High Purity
Each batch is synthesized and purified to >99% purity (HPLC), ensuring reliable and reproducible results in sensitive experiments.

2.Accurate Dosing & Consistency
Our peptides are precisely weighed and vacuum-sealed under sterile conditions. Batch-to-batch consistency is rigorously maintained.

3.Endotoxin-Free & Sterile Processing
Manufactured in a cleanroom environment, our peptides are free from endotoxins, microbial contamination, and other impurities that could interfere with cell-based or in vivo studies.

It can prevent the skin from producing melanin, achieving the effects of whitening, fading spots and even out skin tone. In addition, it also has anti-inflammatory effects, which can reduce skin inflammation, prevent premature aging, and promote healthy and youthful skin.

Company profile



Nanhua District Di Lei Trading Service Department is an enterprise specializing in the export of various chemical products. It has strong economic strength, is equipped with the most advanced production equipment and core technologies in the industry, and is deeply engaged in the research and development of high-quality products. The company has always adhered to the core concept of "Quality First", and is committed to providing high-quality and cost-effective premium products for the global market. We uphold an open and win-win attitude, and are willing to join hands with customers at home and abroad to explore the international market. We sincerely welcome customers to visit our factory for business cooperation and exchanges.



1. Superior Product Quality

Product quality is the foundation of our business.  Peptides are synthesized using solid-phase peptide synthesis (SPPS), then purified through HPLC and confirmed by mass spectrometry (MS).

Each batch includes a Certificate of Analysis (COA) with key data:
• Purity (HPLC)
• Molecular weight (MS)
• Water content
• Residual solvents
• Microbial limit (if applicable)

For clients with higher regulatory demands, we also provide third-party testing reports, endotoxin (LAL) data, and stability studies upon request.

2. Customization & R&D Support

We offer flexible custom synthesis services, supported by an experienced R&D team. Whether you’re looking for novel peptide sequences, cosmetic-grade purity, or modified molecules (e.g., PEGylation, acetylation), we can deliver high-quality results on time.

Our services include:
• Custom peptide synthesis (mg to kg scale)
• Peptide modifications and labeling
• Small molecule synthesis
• Project-based research and scale-up

We work closely with our clients to ensure technical feasibility, fast delivery, and cost control throughout the development cycle.

3. Wide Product Portfolio

We supply a comprehensive and expanding product range:
• Peptides: GLP-1 analogs (e.g., Semaglutide, Tirzepatide, Retatrutide), cosmetic peptides (e.g., Acetyl Hexapeptide-8, Matrixyl), anti-aging peptides, research peptides.
• Small Molecules: Nootropics, NAD+ boosters (e.g., NMN, NR, NADH), and intermediates.
• Biochemicals: Amino acid derivatives, enzyme co-factors, custom reagents.

New products are launched regularly to meet evolving market needs. We also support batch reservations for clients with ongoing or seasonal demand.