Peptides are chemical substances composed of amino acids. Different amino acid composition sequences and modifications generate different types of peptides. Peptides play important roles in pharmaceutical research, new drug development, cosmetics, and other fields.

Peptides are generally synthesized in laboratories and pharmaceutical companies, and you can find many companies that produce peptides online for purchase. However, different countries have different regulations and policies for peptides. This may cause trouble during transportation. A complete peptide transport document and testing certificate can help with safe transportation.

This article was written by Omizzur Peptide Laboratory and will help you understand how to buy peptides online safely. The article is about 1400 words, you can save it and share when you need.

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5 Tips You Need to Pay Attention to When Ordering Peptide Online:

1. Ensure the correct peptide name and sequence, or CAS number.

Peptide products may have different names at the same time, and if you are not familiar with the product, it can make you feel confused. However, each mature peptide product has a unique CAS number, which is equivalent to the identification of the peptide product and is universal worldwide.

You can enter the CAS number for searching for peptides from here:

If you are a professional peptide researcher, we recommend that you provide the sequence or structural diagram of peptide products, as well as the required quantity and purity to our peptide team. We will have the ability to quickly evaluate and make quotation.

2. Confirm the delivery time of peptide products

At Omizzur laboratory, there are some peptides available in stock, which are often purchased by many people. We will be able to provide fast delivery, with packaging completed within 1-2 days, and FedEx /DHL completing global delivery within 5-7 days.

There are many peptide products that require custom-made: they usually appear in scientific literature and research journals. These products are mainly used for scientific experiments. They have different amino acid sequence lengths, modifications, and spatial structures. Our peptide team needs to evaluate its synthesis success rate, solubility, stability, etc. Based on synthesis experience and literature, and finally complete the quotation and delivery confirmation. After peptide synthesis, the product needs to be tested to ensure that it can meets the research and development requirements. The entire peptide synthesis and transportation process generally takes about 2-4 weeks.

Remember: confirm delivery time with peptide laboratory.

3. What should be done after the transportation of peptide products is delayed?

Due to the special packaging of some peptide products, they may face local customs inspections. This will delay transportation time (any peptide company's products may face this situation, and peptide companies do not have the authority to affect the customs clearance process.)

Preparing sufficient proof of goods can accelerate this process. However, not all countries can successfully complete customs clearance. Please confirm with Omizzur's customer services before placing an order.

If the goods are being inspected, don't worry. Contact the Omizzur team and they will cooperate with customs to provide complete product certification documents. This process will take approximately 2-5 days. After testing, the product will be released by customs and will arrive in your hands within 1-2 days.

4. Remember to check the product packaging and the accompanying inspection report upon arrival

Some packaging may be opened and inspected by customs. If there is any damage, please contact us. We will initiate relevant compensation methods.

Omizzur is fully responsible for the product analysis report. Each batch of products comes with the MS, HPLC, and COA analysis reports for this batch of peptide products.

5. How to preserve peptide products?

Due to the instability of peptide products, they can be stored at room temperature for approximately 15-30 days (depending on the type of peptide). Reasonable peptide modification can prolong its stability.

After receiving the peptide product, please place it in the freezer to isolate it from moisture and sunlight. Do not dissolve all peptide products at once, only dissolve the dosage you need to use. The dissolved peptide will need to be stored in a refrigerator and used as soon as possible.

FAQ1: How is the price of peptide synthesis calculated?

The factors that usually affect the price of peptides include their length, purity, quantity, salt system, type of modification, and difficulty evaluation.

Peptide length:

Generally, for 2-6 lengths, the price is the same. The longer the length, the higher the price, which is generally proportional. For example, if all requirements are the same, the price of a 20 amino acid peptide segment is usually twice that of a 10 amino acid peptide segment.

Purity of peptides:

The vast majority of buyers choose HPLC>95%, which is also the most cost-effective purity. If HPLC>98%, it belongs to high purity and cannot tolerate any small impurities. The price is 1.2-1.4 times that of 95%.

Number of peptides:

The units here are weight units such as mg, g, and kg, which are mostly in mg or g. For example, I need 5mg, 10mg, or 100mg. Here is an empirical statement: often times, the price of 200mg is 1.4 times that of 100mg, and the price of 500mg is 1.9 times that of 100mg. When the quantity increases to 5 times, the price is less than 2 times. It is not a proportional relationship, so it is recommended to buy more appropriately to prevent not using enough and buying again, which not only wastes time but also costs more money.

The salt system of peptides:

Peptides are purified through high-performance liquid chromatography. Due to the nature of the mobile phase, peptides carry acids, such as trifluoroacetic acid system, acetic acid system, hydrochloric acid system, phosphoric acid system, etc. Generally, peptide companies default to trifluoroacetic acid system in their quotations, and many sales will not disclose them unless the acid system of the peptide is noted during the inquiry.

The prices of acetic acid and hydrochloric acid systems are generally 1.3-1.4 times higher than the default price of trifluoroacetic acid systems, because peptide companies need to purify more and replace trifluoroacetic acid, which increases the cost and yield, resulting in higher prices.

Types of peptide modifications:

Peptides with modifications are definitely more expensive than those without modifications. Nowadays, N-terminal acetylation and C-terminal amidation are basically free, while other modifications require additional fees. However, don't worry, many conventional modifications are not expensive. For example, if 5mg is needed for 5Fam modification, the modification price is only over 400 yuan.

Difficulty assessment of peptides:

Unless peptides have these characteristics, such as being particularly hydrophobic, long, easily oxidizable, unstable, and with a continuously circulating sequence, they are not considered in the quotation.

FAQ2: How long does it usually take for peptide synthesis?

If a regular sequence does not require ring formation, if a person only synthesizes this one, within 20 amino acids, it can be synthesized, purified, and freeze-dried in 6 working days.

Peptide companies usually arrange many peptide orders simultaneously, so most orders take 2-3 weeks.

Omizzur Peptide Services

 Inquiry for peptides:

 1. Click to send inqauiry online:  Make Inquiry Now 

 2. Send mail to us: [email protected]

  * Please mail us your product name and quantity needed, Omizzur will get back to you within 1 hour.