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| Product | Description | |
|---|---|---|
| difelikefalin Impurity 5 | difelikefalin Impurity 5. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 4-amino-1-((R)-2-((R)-2-((R)-2-((R)-2-amino-3-phenylpropanamido)-3-phenylpropanamido)-4-methylpentanamido)-6-(methylamino)hexanoyl)piperidine-4-carboxylic acid. CAS No. 1024828-78-1. Molecular formula: C37H55N7O6. Mole weight: 693.88. Catalog: APB1024828781. |  |
| difelikefalin Impurity 8 | difelikefalin Impurity 8. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 4-amino-1-((R)-2-((R)-2-((R)-2-((R)-2-amino-3-phenylpropanamido)-3-phenylpropanamido)-4-methylpentanamido)-6-(isopropylamino)hexanoyl)piperidine-4-carboxylic acid. CAS No. 1024828-90-7. Molecular formula: C39H59N7O6. Mole weight: 721.93. Catalog: APB1024828907. | |
| Difelikefalin Acid Impurity | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys; fflk; Difelikefalin impurity 24; D-Phenylalanyl-D-phenylalanyl-D-leucyl-D-lysine; H-D-Phe-D-Phe-D-Leu-D-Lys-OH; D-Phe-D-Phe-D-Leu-D-Lys. Grade: ≥95%. CAS No. 3029769-41-0. Molecular formula: C30H43N5O5. Mole weight: 553.69. |  |
| (1-(L-Isoleucyl)piperidine-4-carbonyl)-L-phenylalanine | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Ile-Inp-Phe; Difelikefalin impurity 3; N-[[1-[(2S,3S)-2-Amino-3-methyl-1-oxopentyl]-4-piperidinyl]carbonyl]-D-phenylalanine; (S)-2-(1-((2S,3S)-2-Amino-3-methylpentanoyl)piperidine-4-carboxamido)-3-phenylpropanoic acid. Grade: ≥95%. Molecular formula: C21H31N3O4. Mole weight: 389.49. | |
| 1-(L-Leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic acid | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Leu-Lys-Pip; Difelikefalin impurity 19; LK-Pip; Leu-Lys-4-amino-4-piperidinecarboxylic acid; N1-(L-Leucyl-L-lysyl)-4-amino-4-piperidinecarboxylic acid. Grade: ≥95%. Molecular formula: C18H35N5O4. Mole weight: 385.51. | |
| (1-(L-Leucyl)piperidine-4-carbonyl)-D-phenylalanine | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Leu-Inp-DPhe; Difelikefalin impurity 2; (R)-2-(1-((S)-2-Amino-4-methylpentanoyl)piperidine-4-carboxamido)-3-phenylpropanoic acid; N-[[1-[(2S)-2-Amino-4-methyl-1-oxopentyl]-4-piperidinyl]carbonyl]-D-phenylalanine. Grade: ≥95%. CAS No. 1173674-34-4. Molecular formula: C21H31N3O4. Mole weight: 389.49. | |
| 1-(L-Phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Phe-DLeu-DLys-Pip; Difelikefalin impurity 20; Flk-Pip; N1-(L-Phenylalanyl-D-leucyl-D-lysyl)-4-amino-4-piperidinecarboxylic acid; L-Phe-D-Leu-D-Lys-4-amino-4-piperidinecarboxylic acid. Grade: ≥95%. Molecular formula: C27H44N6O5. Mole weight: 532.68. | |
| 1-(L-Phenylalanyl-L-phenylalanyl-L-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Phe-Phe-Leu-DLys-Pip; FFLk-Pip; Difelikefalin impurity 26; N1-(L-Phenylalanyl-L-phenylalanyl-L-leucyl-D-lysyl)-4-amino-4-piperidinecarboxylic acid; L-Phe-L-Phe-L-Leu-D-Lys-4-amino-4-piperidinecarboxylic acid. Grade: ≥95%. Molecular formula: C36H53N7O6. Mole weight: 679.85. | |
| (1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-proline | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Phe-Inp-Pro; (S)-1-(1-((S)-2-Amino-3-phenylpropanoyl)piperidine-4-carbonyl)pyrrolidine-2-carboxylic acid; Difelikefalin impurity 7; 1-[[1-[(2S)-2-Amino-1-oxo-3-phenylpropyl]-4-piperidinyl]carbonyl]-L-proline. Grade: ≥95%. CAS No. 956233-15-1. Molecular formula: C20H27N3O4. Mole weight: 373.45. | |
| Difelikefalin | Difelikefalin. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1024828-77-0. Molecular formula: C36H53N7O6. Mole weight: 679.86. Catalog: APB1024828770. | |
| Difelikefalin dimer | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys-Pip-DPhe-DPhe-DLeu-DLys-Pip; fflk-Pip-fflk-Pip; 1-((1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carbonyl)-D-phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid; D-Phe-D-Phe-D-Leu-D-Lys-4-amino-4-piperidinecarbonyl-D-Phe-D-Phe-D-Leu-D-Lys-4-amino-4-piperidinecarboxylic acid; Dimer Difelikefalin. Grade: ≥95%. Molecular formula: C72H104N14O11. Mole weight: 1341.68. | |
| Difelikefalin Enantiomer | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Phe-Phe-Leu-Lys-4-Piperidinecarboxylic acid; Difelikefalin impurity; N1-(L-Phenylalanyl-L-phenylalanyl-L-leucyl-L-lysyl)-4-amino-4-piperidinecarboxylic acid; L-Phe-L-Phe-L-Leu-L-Lys-[gamma-(4-N-piperidinyl)amino carboxylic acid]; 1-(L-phenylalanyl-L-phenylalanyl-L-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic acid; Difelikefalin Impurity 14; Phe-Phe-Leu-Lys-4-amino-4-piperidinecarboxylic acid. Grade: ≥95%. CAS No. 2742623-84-1. Molecular formula: C36H53N7O6. Mole weight: 679.85. | |
| [D-Ile]3-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DIle-DLys-Pip; D-Phe-D-Phe-D-Ile-D-Lys-Pip; ffik-Pip; 1-(D-Phenylalanyl-D-phenylalanyl-D-isoleucyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid; D-Ile3-Difelikefalin; [D-Ile]3-Difelikefalin; [D-Ile3]-Difelikefalin; D-Ile-Difelikefalin; N1-(D-Phenylalanyl-D-phenylalanyl-D-isoleucyl-D-lysyl)-4-amino-4-piperidinecarboxylic acid; D-Phe-D-Phe-D-Ile-D-Lys-4-amino-4-piperidinecarboxylic acid. Grade: ≥95%. Molecular formula: C36H53N7O6. Mole weight: 679.85. | |
| [D-Lys(Ac)]4-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys(Ac)-Pip; 1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-acetyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid; N1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-acetyl-D-lysyl)-4-amino-4-piperidinecarboxylic acid; D-Phe-D-Phe-D-Leu-D-Lys(Ac)-4-amino-4-piperidinecarboxylic acid; ffl-DLys(Ac)-Pip; Difelikefalin acetate impurity 15; Lys4(Ac)-Difelikefalin; D-Lys4(Ac)-Difelikefalin; Lys(Ac)-Difelikefalin; Lys(Ac)4-Difelikefalin; [Lys(Ac)]4-Difelikefalin. Grade: ≥95%. Molecular formula: C38H55N7O7. Mole weight: 721.89. | |
| [D-Lys(EA)]4-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys(EA)-4-Piperidinecarboxylic acid; 4-Amino-1-((R)-2-((R)-2-((R)-2-((R)-2-amino-3-phenylpropanamido)-3-phenylpropanamido)-4-methylpentanamido)-6-((2-aminoethyl)amino)hexanoyl)piperidine-4-carboxylic acid; Difelikefalin impurity 10; 1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(2-aminoethyl)-D-lysyl)-4-aminopiperidine-4-carboxylic acid; D-Phe-D-Phe-D-Leu-D-Lys(EA)-4-amino-4-piperidinecarboxylic acid; ffl-DLys(EA)-Pip; D-Lys4(EA)-Difelikefalin; D-Lys(EA)4-Difelikefalin. Grade: ≥95%. CAS No. 2219351-44-5. Molecular formula: C38H58N8O6. Mole weight: 722.92. | |
| [D-Lys(Ipr)]4-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys(Ipr)-4-Piperidinecarboxylic acid; Difelikefalin impurity 8; 1-[D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(1-methylethyl)-D-lysyl]-4-amino-4-piperidinecarboxylic acid; 1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-isopropyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid; D-Phe-D-Phe-D-Leu-D-Lys(Ipr)-4-amino-4-piperidinecarboxylic acid; ffl-DLys(Ipr)-Pip; D-Lys4(Ipr)-Difelikefalin; D-Lys(Ipr)4-Difelikefalin; 4-Amino-1-((R)-2-((R)-2-((R)-2-((R)-2-amino-3-phenylpropanamido)-3-phenylpropanamido)-4-methylpentanamido)-6-(isopropylamino)hexanoyl)piperidine-4-carboxylic acid. Grade: ≥95%. CAS No. 1024828-90-7. Molecular formula: C39H59N7O6. Mole weight: 721.93. | |
| [D-Lys(Me)]4-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys(Me)-4-Piperidinecarboxylic acid; Difelikefalin impurity 5; 1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-methyl-D-lysyl)-4-aminopiperidine-4-carboxylic acid; N1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-methyl-D-lysyl)-4-amino-4-piperidinecarboxylic acid; D-Phe-D-Phe-D-Leu-D-Lys(Me)-4-amino-4-piperidinecarboxylic acid; ffl-DLys(Me)-Pip; D-Lys4(Me)-Difelikefalin; D-Lys(Me)4-Difelikefalin. Grade: ≥95%. CAS No. 1024828-78-1. Molecular formula: C37H55N7O6. Mole weight: 693.88. | |
| [D-Lys(Propylamine)]4-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys(Propylamine)-4-Piperidinecarboxylic acid; 4-Amino-1-((R)-2-((R)-2-((R)-2-((R)-2-amino-3-phenylpropanamido)-3-phenylpropanamido)-4-methylpentanamido)-6-((3-aminopropyl)amino)hexanoyl)piperidine-4-carboxylic acid; Difelikefalin impurity 11; D-Phe-D-Phe-D-Leu-D-Lys(Propylamine)-4-amino-4-piperidinecarboxylic acid; ffl-DLys(Propylamine)-Pip; D-Lys4(Propylamine)-Difelikefalin; D-Lys(Propylamine)4-Difelikefalin; 1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(3-aminopropyl)-D-lysyl)-4-aminopiperidine-4-carboxylic acid. Grade: ≥95%. CAS No. 2219351-45-6. Molecular formula: C39H60N8O6. Mole weight: 736.94. | |
| [D-Lys(tBu)]4-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: DPhe-DPhe-DLeu-DLys(tBu)-4-Piperidinecarboxylic acid; Difelikefalin impurity 16; 1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(tert-butyl)-D-lysyl)-4-aminopiperidine-4-carboxylic acid; N1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(tert-butyl)-D-lysyl)-4-amino-4-piperidinecarboxylic acid; D-Phe-D-Phe-D-Leu-D-Lys(tBu)-4-amino-4-piperidinecarboxylic acid; ffl-DLys(tBu)-Pip; D-Lys4(tBu)-Difelikefalin; D-Lys(tBu)4-Difelikefalin. Grade: ≥95%. Molecular formula: C40H61N7O6. Mole weight: 735.96. | |
| [D-Phe((βR)-Me)]1-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: beta-RMe-DPhe-DPhe-DLeu-DLys-4-Piperidinecarboxylic acid; 4-Amino-1-((R)-6-amino-2-((R)-N-((2R,3R)-2-amino-3-phenylbutanoyl)-2-((R)-2-amino-3-phenylpropanamido)-4-methylpentanamido)hexanoyl)piperidine-4-carboxylic acid; 4-Amino-1-(((2R,3R)-2-amino-3-phenylbutanoyl)-D-phenylalanyl-D-leucyl-D-lysyl)piperidine-4-carboxylic acid; Difelikefalin impurity 9; [beta-RMe-D-Phe]1-Difelikefalin; [β-(R)-Me-D-Phe]1-Difelikefalin; [D-Phe(βR-Me)]1-Difelikefalin. Grade: ≥95%. CAS No. 2756592-19-3. Molecular formula: C37H55N7O6. Mole weight: 693.88. | |
| [D-Phe(EA)]1-Difelikefalin | An impurity of Difelikefalin. Difelikefalin is a kappa opioid receptor (KOR) agonist used to treat moderate to severe pruritus (itching) associated with chronic kidney disease (CKD) in patients undergoing hemodialysis. Synonyms: Ethylamine-DPhe-DPhe-DLeu-DLys-4-Piperidinecarboxylic acid; 4-Amino-1-((2R,5R,8R,11R)-14-amino-2-(4-aminobutyl)-8,11-dibenzyl-5-isobutyl-4,7,10-trioxo-3,6,9,12-tetraazatetradecan-1-oyl)piperidine-4-carboxylic acid; 4-Amino-1-((2-aminoethyl)-D-phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)piperidine-4-carboxylic acid; Difelikefalin impurity 12; D-Phe(EA)-D-Phe-D-Leu-D-Lys-4-amino-4-piperidinecarboxylic acid; f(EA)flk-Pip; D-Phe1(EA)-Difelikefalin; D-Phe(EA)1-Difelikefalin. Grade: ≥95%. CAS No. 2219351-61-6. Molecular formula: C38H58N8O6. Mole weight: 722.92. | |
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