English 
Relying on the University of Science and Technology of China and Tsinghua University, Hefei KS-V Peptide Biotechnology Co., Ltd. has a number of intentional lading technologies in the field of peptide and protein total synthesis. The project team can provide various types and multi-modified biological reagents using chemical synthesis methods. Products including modified histones, ubiquitin, and ubiquitin probes toxin peptides, APIs (Semaglutide, Plecanati-de, Octreotide, Edotreotide, etc.) and Cosmetic Peptide are on the peptide list of KS-V.
Modified Histone
Ubiquitins and Ubiquitin Probes
Peptide Toxin
Cosmetic Peptide
APIs
We provide the best quality products and services in the industry, and we have professional knowledge and rich experience in the field of peptide development and production.
KS-V Peptide is a leading peptide company in peptide developing and manufacturing.
Our employees are full of love for the biological field and full of enthusiasm for peptide synthesis and peptide manufacturing, which builds the foundation of our success.
We believe that ethically correct behavior and integrity are essential to long-term business success, so we constantly monitor and improve our social, economic and environmental performance.
Contact our customer service at sales5@difficultpeptide.com.
Send your requirements of catalog peptide products.
Receive and check our quotation.
Sign the contract and arrange the payment.
We will arrange the delivery within 1-3 weeks after receiving the balance.
lf you have any other requirements or questions on our peptide products, contact us！
The weight of dry peptide contains not only the peptide but also some non-peptide components such as water, absorbed solvent, ligand ions and salt. The net content of peptide is the weight percentage of peptide in it, this percentage has a wide range of values, may be from 50% to 90%, depending on the purity, sequence and the method of synthesis and purification, do not confuse the net content of peptide with the purity of peptide, they are two completely different concepts. Purity is usually determined by HPLC. The purity is defined as the percentage of peptide samples containing the correct sequence of components, while the net peptide content is the percentage of peptides in the sample relative to non-peptides, and the net peptide content is usually determined by amino acid fraction analysis or UV spectroscopy. This information is mainly important for calculating the peptide concentration in some experiments that are sensitive to the peptide concentration.
Peptides generally need to be stored away from light for long term storage and should be stored at -20 degrees, and can be stored at 4 degrees for short term. It can be transported at room temperature for a short time. Peptides are stable at -20°C, especially after being freeze dried and stored in desiccators. Before exposing them to air, freeze dried peptides can be put at room temperature. This will be less affected by humidity, and when freeze-drying is not possible, the best method is to store them in small working sample volumes. For Cys, Met or TrP containing peptides, deoxidation buffer is essential for their solubilization, because such types of peptides can be easily oxidized by air, and the slow flow of nitrogen or argon through the peptide before sealing the bottle will also reduce the oxidation effect. Peptides containing Gln or Asn are also susceptible to degradation, and all these peptides have a limited life span compared to those that do not contain these problematic simple ones.
