Cagrilintide: Research Uses, Reconstitution, and Safe Laboratory Handling
Reviewed by the VendPeptides Editorial Team. Written from product labeling, the batch certificate of analysis and published literature. Last updated September 2026.
Cagrilintide is a long-acting amylin analogue research peptide supplied as a lyophilized powder for laboratory study only.
It has been studied in a phase 2 trial of once-weekly cagrilintide in people with overweight and obesity, reported by Lau DCW et al. in The Lancet in 2021.
It is also known by the code names NN9838 and AM833, and it is a component of the combination referred to as CagriSema; VendPeptides sells it as 5 mg and 10 mg vials and as 10-vial kits (5 mg kit 50 mg, 10 mg kit 100 mg).
This guide covers what Cagrilintide is, how to calculate reconstitution concentration by vial size, safe laboratory handling, and where to buy it in the US.
What is Cagrilintide?
Cagrilintide is a synthetic long-acting amylin analogue sold as a lyophilized powder for research purposes only; it is not approved for any medical or veterinary purpose.
The CAS number is 1415456-99-3, and the compound is also referenced in the literature as NN9838 and AM833.
For research purposes only. Not for human consumption.
VendPeptides supplies Cagrilintide as 5 mg and 10 mg single vials and as 10-vial kits (5 mg kit 50 mg, 10 mg kit 100 mg), each with a batch certificate of analysis (COA) and expiry on the label; always defer to the vial label and the batch COA for the specifications of the lot in hand.
Cagrilintide, NN9838 and AM833: are they the same?
Yes. Cagrilintide, NN9838, and AM833 are the same molecule; NN9838 and AM833 are code names used during development, and CagriSema is the name used for the combination product that includes Cagrilintide.
Because the names are interchangeable, search the published literature under all three when compiling a reference set, and confirm the identity of your material against the batch certificate of analysis (COA) rather than the label name alone.
For research purposes only. Not for human consumption.
What has Cagrilintide been studied for?
Cagrilintide has been studied in a phase 2 trial of once-weekly cagrilintide in people with overweight and obesity, reported by Lau DCW et al. in The Lancet in 2021; that trial reported tolerability and body-weight findings, and the article is listed in the sources below.
Published work describes the compound as a long-acting amylin analogue, and the combination referred to as CagriSema has also been studied; this guide makes no claim about outcomes and reports only what the literature states.
As sold, Cagrilintide is a research chemical: it is not approved for any medical or veterinary purpose, and it is not for human consumption.
For research purposes only. Not for human consumption.
Read the primary literature directly, and read the batch certificate of analysis (COA) for the lot you hold; both take priority over any summary, including this one.
Cagrilintide reconstitution and concentration by vial size
Adding 2 mL of bacteriostatic water to a 10 mg vial gives 5 mg/mL.
| Vial size | 10-vial kit total | Diluent added | Resulting concentration | µg per µL |
|---|---|---|---|---|
| 5 mg | 50 mg | 1 mL (1,000 µL) | 5 mg/mL | 5 µg/µL |
| 10 mg | 100 mg | 2 mL (2,000 µL) | 5 mg/mL | 5 µg/µL |
| 5 mg | 50 mg | 2 mL (2,000 µL) | 2.5 mg/mL | 2.5 µg/µL |
| 10 mg | 100 mg | 3 mL (3,000 µL) | 3.33 mg/mL | 3.33 µg/µL |
| 10 mg | 100 mg | 1 mL (1,000 µL) | 10 mg/mL | 10 µg/µL |
The vial label and the batch certificate of analysis (COA) take priority over any table; use the diluent volume stated for your lot.
Cagrilintide 10mg vial reconstitution
A 10 mg vial reconstituted with 2 mL (2,000 µL) of bacteriostatic water gives 5 mg/mL, which is 5 µg/µL.
If a different working concentration is needed, divide the vial mass by the diluent volume: 10 mg in 1 mL (1,000 µL) gives 10 mg/mL, and 10 mg in 3 mL (3,000 µL) gives about 3.33 mg/mL.
Record the diluent volume and the date on the vial label, and check the batch certificate of analysis (COA) for the lot before use.
Cagrilintide 5mg vial reconstitution
A 5 mg vial reconstituted with 1 mL (1,000 µL) of bacteriostatic water gives 5 mg/mL, which is 5 µg/µL.
For a lower working concentration, 5 mg in 2 mL (2,000 µL) gives 2.5 mg/mL, or 2.5 µg/µL.
The vial label and the batch certificate of analysis (COA) take priority over any calculated figure.
How long does reconstituted Cagrilintide stay stable?
There is no single stability figure that applies to every lot; the batch certificate of analysis (COA) and the vial label are the authoritative source for storage and handling of your material.
As general laboratory practice, keep reconstituted material refrigerated, protected from light, and clearly labeled with the reconstitution date, and avoid repeated temperature cycling.
For research purposes only. Not for human consumption.
How to handle Cagrilintide safely in the laboratory
- Read the batch certificate of analysis (COA) and the vial label before opening the vial, and confirm the identity, mass, and storage conditions for that lot.
- Put on a lab coat, nitrile gloves, and eye protection, and work in a ventilated area or biosafety cabinet.
- Inspect the lyophilized powder and the septum, and do not use a vial that shows damage, moisture, or an unreadable label.
- Swab the septum with 70% isopropyl alcohol and let it dry before adding diluent.
- Add bacteriostatic water slowly down the inside wall of the vial, then swirl gently; do not shake, since foaming can denature peptide.
- Label the vial with the compound name, lot number, diluent volume, concentration, and reconstitution date.
- Store the vial as directed on the label and COA, and log the reconstitution in your laboratory notebook.
Warning: Poor sterile technique or an unlabeled vial can cause contamination and mix-ups, so work aseptically and label every container before it leaves the bench.
Is Cagrilintide the same as Semaglutide?
No. Cagrilintide is a long-acting amylin analogue, while Semaglutide is a GLP-1 receptor agonist; they are different molecules with different CAS numbers and different mechanisms described in the literature.
They are sometimes studied together, which is why the combination is referred to as CagriSema, but that does not make them the same compound.
For research purposes only. Not for human consumption.
Check the batch certificate of analysis (COA) for the exact identity of any material you hold.
Is Cagrilintide safe for humans?
No. Cagrilintide is sold for research purposes only, is not for human consumption, and as sold is not approved for any medical or veterinary purpose.
FDA guidance treats research chemicals as laboratory materials and expects 'not for human consumption' labeling; this product is supplied under that framework.
For research purposes only. Not for human consumption.
Any question about human health belongs with a licensed healthcare professional, not with a supplier catalog.
Can Cagrilintide be used for pets or animals?
No. Cagrilintide is a research chemical for laboratory use only, is not for human consumption, and is not a veterinary product; it is not approved for any medical or veterinary purpose.
For any animal health question, consult a licensed veterinarian.
For research purposes only. Not for human consumption.
Where to buy Cagrilintide (5 mg and 10 mg)
VendPeptides supplies Cagrilintide 10-Pack Kits 5/10mg CG10 from a US warehouse, with 5 mg and 10 mg vials and 10-vial kits (5 mg kit 50 mg at $360.00; 10 mg kit 100 mg at $465.00; 5 mg vial at $48.00; 10 mg vial at $65.00).
Every vial ships with a batch certificate of analysis (COA) and an expiry date on the label, and the COA takes priority over any listing text.
Related research materials include Semaglutide 10-Pack Kits SM and Retatrutide 10-Vial Bulk Kit RT, and the full catalog is in the Metabolic Research Peptides collection.
For research purposes only. Not for human consumption.
Frequently asked questions
Is Cagrilintide safe for humans?
No. Cagrilintide is for research purposes only, is not for human consumption, and as sold is not approved for any medical or veterinary purpose. Any human health question belongs with a licensed healthcare professional.
Is Cagrilintide the same as Semaglutide?
No. Cagrilintide is a long-acting amylin analogue and Semaglutide is a GLP-1 receptor agonist, so they are different molecules. They are sometimes studied together, which is why the combination is called CagriSema.
How do I reconstitute a Cagrilintide 10mg vial?
Add 2 mL (2,000 µL) of bacteriostatic water to a 10 mg vial to get 5 mg/mL, or 5 µg/µL. For other concentrations, divide the vial mass by the diluent volume, and follow the vial label and batch COA.
Can Cagrilintide be used for pets or animals?
No. It is a research chemical for laboratory use only, is not for human consumption, and is not a veterinary product. Consult a licensed veterinarian for any animal health question.
Is Cagrilintide the same as NN9838 or AM833?
Yes. Cagrilintide, NN9838, and AM833 are the same molecule; the latter two are development code names. Confirm identity against the batch certificate of analysis (COA) for your lot.
Is Cagrilintide a peptide, and what class is it?
Yes. Cagrilintide is a synthetic peptide and is described in the literature as a long-acting amylin analogue. It is supplied as a lyophilized powder for research purposes only, not for human consumption.
Can you still buy Cagrilintide?
Yes, subject to your institution's rules. VendPeptides lists Cagrilintide 10-Pack Kits 5/10mg CG10 with 5 mg and 10 mg vials and 10-vial kits, each shipped with a batch COA and expiry on the label; it is for research purposes only, not for human consumption.
Sources and further reading
- Lau DCW et al. Once-weekly cagrilintide for weight management in people with overweight and obesity. Lancet 2021.
- FDA — research chemicals and 'not for human consumption' labeling
Disclaimer. This article is educational and describes laboratory handling and published literature only. It is not medical or veterinary advice and is not a substitute for a licensed professional. For research purposes only. Not for human consumption. Products are sold to qualified researchers for in-vitro and laboratory research, are not approved drugs, foods, cosmetics or devices, and are not for human or animal use. This article was written with AI assistance and reviewed by a member of the VendPeptides Editorial Team.