Shopping Cart
- Remove All
Your shopping cart is currently empty
Difelikefalin acetate (CR 845 acetate) is a peripherally restricted kappa opioid receptor agonist. CR845 exhibit low P450 CYP inhibition and low penetration into the brain.

| Pack Size | Price | Availability | Quantity |
|---|---|---|---|
| 1 mg | $100 | In Stock | |
| 5 mg | $208 | In Stock | |
| 10 mg | $327 | In Stock | |
| 25 mg | $527 | In Stock | |
| 50 mg | $713 | In Stock | |
| 100 mg | $978 | In Stock | |
| 200 mg | $1,290 | In Stock |
| Description | Difelikefalin acetate (CR 845 acetate) is a peripherally restricted kappa opioid receptor agonist. CR845 exhibit low P450 CYP inhibition and low penetration into the brain. |
| In vitro | Difelikefalin (CR-845; FE-202845) does not penetrate the blood-brain barrier. Difelikefalin does not bind to mu opioid receptors or any other receptors beside KORs[1]. |
| Molecular Weight | 739.9 |
| Formula | C38H57N7O8 |
| Cas No. | 2803411-76-7 |
| Smiles | CC(O)=O.O=C(C1(N)CCN(C([C@@H](CCCCN)NC([C@@H](CC(C)C)NC([C@@H](CC2=CC=CC=C2)NC([C@@H](CC3=CC=CC=C3)N)=O)=O)=O)=O)CC1)O |
| Relative Density. | no data available |
| Storage | keep away from moisture | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |

Copyright © 2015-2025 TargetMol Chemicals Inc. All Rights Reserved.