Difelikefalin Acetate and its Impurities

Difelikefalin Acetate, sold under the brand name Korsuva, is an analgesic opioid peptide used for the treatment of moderate to severe itching. Reference standards of Difelikefalin Acetate API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 27 results for Difelikefalin Acetate Impurities
Drug Reference Standards & Impurity Synthesis in India
PA PEP 003179

Difelikefalin Acetate

Difelikefalin Acetate

  • Catalogue No.:PA PEP 003179

  • CAS :

    1024829-44-4

  • Molecular Formula : C36H53N7O6 . X(C2H4O2)

  • Molecular Weight : 679.86 + x(60.05)

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004353

1-(N2-D-phenylalanyl-D-phenylalanyl-D-leucyl-N6-(tert-butyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N2-D-phenylalanyl-D-phenylalanyl-D-leucyl-N6-(tert-butyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004353

  • CAS :

    NA

  • Molecular Formula : C40H61N7O6

  • Molecular Weight : 735.97

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004354

1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

  • Catalogue No.:PA PEP 004354

  • CAS :

    NA

  • Molecular Formula : C36H56Cl3N7O6

  • Molecular Weight : 789.24

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004355

1-(N6-Acetyl-N2-acetyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N6-Acetyl-N2-acetyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004355

  • CAS :

    NA

  • Molecular Formula : C31H48N6O7

  • Molecular Weight : 616.76

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004356

1-(L-Phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

1-(L-Phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

  • Catalogue No.:PA PEP 004356

  • CAS :

    NA

  • Molecular Formula : C36H56Cl3N7O6

  • Molecular Weight : 789.24

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004357

1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-hydroxypiperidine-4-carboxylic Acid Dihydrochloride

1-(D-Phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-hydroxypiperidine-4-carboxylic Acid Dihydrochloride

  • Catalogue No.:PA PEP 004357

  • CAS :

    NA

  • Molecular Formula : C36H54Cl2N6O7

  • Molecular Weight : 753.76

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004358

1-(N2-D-Phenylalanyl-L-phenylalanyl-D-leucyl-N6-acetyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Dihydrochloride

1-(N2-D-Phenylalanyl-L-phenylalanyl-D-leucyl-N6-acetyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Dihydrochloride

  • Catalogue No.:PA PEP 004358

  • CAS :

    NA

  • Molecular Formula : C38H57Cl2N7O7

  • Molecular Weight : 794.82

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004359

1-(N2-D-Phenylalanyl-D-phenylalanyl-L-leucyl-N6-acetyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Dihydrochloride

1-(N2-D-Phenylalanyl-D-phenylalanyl-L-leucyl-N6-acetyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Dihydrochloride

  • Catalogue No.:PA PEP 004359

  • CAS :

    NA

  • Molecular Formula : C38H57Cl2N7O7

  • Molecular Weight : 794.82

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004360

1-(D-Phenylalanyl-D-phenylalanyl-L-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

1-(D-Phenylalanyl-D-phenylalanyl-L-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

  • Catalogue No.:PA PEP 004360

  • CAS :

    NA

  • Molecular Formula : C36H56Cl3N7O6

  • Molecular Weight : 789.24

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004361

1-(D-Phenylalanyl-L-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

1-(D-Phenylalanyl-L-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

  • Catalogue No.:PA PEP 004361

  • CAS :

    NA

  • Molecular Formula : C36H56Cl3N7O6

  • Molecular Weight : 789.24

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004362

1-(L-Phenylalanyl-D-phenylalanyl-D-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

1-(L-Phenylalanyl-D-phenylalanyl-D-leucyl-L-lysyl)-4-aminopiperidine-4-carboxylic Acid Trihydrochloride

  • Catalogue No.:PA PEP 004362

  • CAS :

    NA

  • Molecular Formula : C36H56Cl3N7O6

  • Molecular Weight : 789.24

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004363

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

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

  • Catalogue No.:PA PEP 004363

  • CAS :

    NA

  • Molecular Formula : C72H104N14O11

  • Molecular Weight : 1341.71

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004364

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(2-(1-(N2-D-phenylalanyl-D-phenylalanyl-D-leucyl-N6-(1-(D-phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carbonyl)-D-lysyl)-4-aminopiperidin-4-yl)-2-oxoethyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(2-(1-(N2-D-phenylalanyl-D-phenylalanyl-D-leucyl-N6-(1-(D-phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)-4-aminopiperidine-4-carbonyl)-D-lysyl)-4-aminopiperidin-4-yl)-2-oxoethyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004364

  • CAS :

    NA

  • Molecular Formula : C109H157N21O16

  • Molecular Weight : 2017.59

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004367

(1-(L-Valyl)piperidine-4-carbonyl)-L-phenylalanine

(1-(L-Valyl)piperidine-4-carbonyl)-L-phenylalanine

  • Catalogue No.:PA PEP 004367

  • CAS :

    956242-62-9

  • Molecular Formula : C20H29N3O4

  • Molecular Weight : 375.47

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004368

(1-(L-Leucyl)piperidine-4-carbonyl)-D-phenylalanine Hydrochloride

(1-(L-Leucyl)piperidine-4-carbonyl)-D-phenylalanine Hydrochloride

  • Catalogue No.:PA PEP 004368

  • CAS :

    1281870-46-9

  • Molecular Formula : C21H32ClN3O4

  • Molecular Weight : 425.95

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004369

(1-((2S)-2-Amino-3-methylpentanoyl)piperidine-4-carbonyl)-L-phenylalanine

(1-((2S)-2-Amino-3-methylpentanoyl)piperidine-4-carbonyl)-L-phenylalanine

  • Catalogue No.:PA PEP 004369

  • CAS :

    956977-18-7

  • Molecular Formula : C21H31N3O4

  • Molecular Weight : 389.5

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004370

(1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-leucine

(1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-leucine

  • Catalogue No.:PA PEP 004370

  • CAS :

    1173664-52-2

  • Molecular Formula : C21H31N3O4

  • Molecular Weight : 389.5

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004371

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-methyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-methyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004371

  • CAS :

    1024828-78-1

  • Molecular Formula : C37H55N7O6

  • Molecular Weight : 693.89

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004372

(1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-phenylalanine Hydrochloride

(1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-phenylalanine Hydrochloride

  • Catalogue No.:PA PEP 004372

  • CAS :

    1281870-04-9

  • Molecular Formula : C24H30ClN3O4

  • Molecular Weight : 459.97

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004373

(1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-proline

(1-(L-Phenylalanyl)piperidine-4-carbonyl)-L-proline

  • Catalogue No.:PA PEP 004373

  • CAS :

    956233-15-1

  • Molecular Formula : C20H27N3O4

  • Molecular Weight : 373.45

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004374

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-isopropyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-isopropyl-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004374

  • CAS :

    1024828-90-7

  • Molecular Formula : C39H59N7O6

  • Molecular Weight : 721.94

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004375

4-Amino-1-(((2R,3R)-2-amino-3-phenylbutanoyl)-D-phenylalanyl-D-leucyl-D-lysyl)piperidine-4-carboxylic Acid

4-Amino-1-(((2R,3R)-2-amino-3-phenylbutanoyl)-D-phenylalanyl-D-leucyl-D-lysyl)piperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004375

  • CAS :

    2756592-19-3

  • Molecular Formula : C37H55N7O6

  • Molecular Weight : 693.89

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004376

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(2-aminoethyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(2-aminoethyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004376

  • CAS :

    2219351-44-5

  • Molecular Formula : C38H58N8O6

  • Molecular Weight : 722.93

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004377

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(3-aminopropyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

1-(N2-D-Phenylalanyl-D-phenylalanyl-D-leucyl-N6-(3-aminopropyl)-D-lysyl)-4-aminopiperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004377

  • CAS :

    2219351-45-6

  • Molecular Formula : C39H60N8O6

  • Molecular Weight : 736.96

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004378

4-Amino-1-((2-aminoethyl)-D-phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)piperidine-4-carboxylic Acid

4-Amino-1-((2-aminoethyl)-D-phenylalanyl-D-phenylalanyl-D-leucyl-D-lysyl)piperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004378

  • CAS :

    2219351-61-6

  • Molecular Formula : C38H58N8O6

  • Molecular Weight : 722.93

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004379

1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4-((tert-butoxycarbonyl)amino)piperidine-4-carboxylic Acid

1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4-((tert-butoxycarbonyl)amino)piperidine-4-carboxylic Acid

  • Catalogue No.:PA PEP 004379

  • CAS :

    368866-07-3

  • Molecular Formula : C26H30N2O6

  • Molecular Weight : 466.53

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Drug Reference Standards & Impurity Synthesis in India
PA PEP 004380

(3R,6R)-3,6-Dibenzylpiperazine-2,5-dione

(3R,6R)-3,6-Dibenzylpiperazine-2,5-dione

  • Catalogue No.:PA PEP 004380

  • CAS :

    1021171-64-1

  • Molecular Formula : C18H18N2O2

  • Molecular Weight : 294.35

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