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2D Structure
Also known as: 868540-17-4, Kyprolis, Carfilzomib (pr-171), Pr-171, Carfilzomib (pr171), Unii-72x6e3j5ar
Molecular Formula
C40H57N5O7
Molecular Weight
719.9  g/mol
InChI Key
BLMPQMFVWMYDKT-NZTKNTHTSA-N
FDA UNII
72X6E3J5AR

Carfilzomib is an epoxomicin derivate with potential antineoplastic activity. Carfilzomib irreversibly binds to and inhibits the chymotrypsin-like activity of the 20S catalytic core subunit of the proteasome, a protease complex responsible for degrading a large variety of cellular proteins. Inhibition of proteasome-mediated proteolysis results in an accumulation of polyubiquinated proteins, which may lead to cell cycle arrest, induction of apoptosis, and inhibition of tumor growth.
Carfilzomib is a Proteasome Inhibitor. The mechanism of action of carfilzomib is as a Proteasome Inhibitor.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(2S)-4-methyl-N-[(2S)-1-[[(2S)-4-methyl-1-[(2R)-2-methyloxiran-2-yl]-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]-2-[[(2S)-2-[(2-morpholin-4-ylacetyl)amino]-4-phenylbutanoyl]amino]pentanamide
2.1.2 InChI
InChI=1S/C40H57N5O7/c1-27(2)22-32(36(47)40(5)26-52-40)42-39(50)34(24-30-14-10-7-11-15-30)44-38(49)33(23-28(3)4)43-37(48)31(17-16-29-12-8-6-9-13-29)41-35(46)25-45-18-20-51-21-19-45/h6-15,27-28,31-34H,16-26H2,1-5H3,(H,41,46)(H,42,50)(H,43,48)(H,44,49)/t31-,32-,33-,34-,40+/m0/s1
2.1.3 InChI Key
BLMPQMFVWMYDKT-NZTKNTHTSA-N
2.1.4 Canonical SMILES
CC(C)CC(C(=O)C1(CO1)C)NC(=O)C(CC2=CC=CC=C2)NC(=O)C(CC(C)C)NC(=O)C(CCC3=CC=CC=C3)NC(=O)CN4CCOCC4
2.1.5 Isomeric SMILES
CC(C)C[C@@H](C(=O)[C@]1(CO1)C)NC(=O)[C@H](CC2=CC=CC=C2)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC3=CC=CC=C3)NC(=O)CN4CCOCC4
2.2 Other Identifiers
2.2.1 UNII
72X6E3J5AR
2.3 Synonyms
2.3.1 MeSH Synonyms

1. (2s)-n-((1s)-1-benzyl-2-(((1s)-3-methyl-1-(((2r)-2-methyloxiran-2-yl)carbonyl)butyl)amino)-2-oxoethyl)-4-methyl-2-(((2s)-2-((morpholin-4-ylacetyl)amino)-4-phenylbutanoyl)amino)pentanamide

2. Kyprolis

3. Pr-171

4. Pr171

2.3.2 Depositor-Supplied Synonyms

1. 868540-17-4

2. Kyprolis

3. Carfilzomib (pr-171)

4. Pr-171

5. Carfilzomib (pr171)

6. Unii-72x6e3j5ar

7. Nsc-758252

8. 72x6e3j5ar

9. Chembl451887

10. Chebi:65347

11. Ncgc00249613-01

12. Dsstox_cid_28616

13. Dsstox_rid_82886

14. Dsstox_gsid_48690

15. (2s)-4-methyl-n-[(2s)-1-[[(2s)-4-methyl-1-[(2r)-2-methyloxiran-2-yl]-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]-2-[[(2s)-2-[(2-morpholin-4-ylacetyl)amino]-4-phenylbutanoyl]amino]pentanamide

16. (2s)-n-((1s)-1-benzyl-2-(((1s)-3-methyl-1-(((2r)-2-methyloxiran-2-yl)carbonyl)butyl)amino)-2-oxoethyl)-4-methyl-2-(((2s)-2-((morpholin-4-ylacetyl)amino)-4-phenylbutanoyl)amino)pentanamide

17. (alphas)-alpha-[[2-(4-morpholinyl)acetyl]amino]benzenebutanoyl-l-leucyl-n-[(1s)-3-methyl-1-[[(2r)-2-methyl-2-oxiranyl]carbonyl]butyl]-l-phenylalaninamide

18. (s)-4-methyl-n-((s)-1-(((s)-4-methyl-1-((r)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)-2-((s)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide

19. N-{(2s)-2-[(morpholin-4-ylacetyl)amino]-4-phenylbutanoyl}-l-leucyl-n-{(2s)-4-methyl-1-[(2r)-2-methyloxiran-2-yl]-1-oxopentan-2-yl}-l-phenylalaninamide

20. (s)-4-methyl-n-((s)-1-((s)-4-methyl-1-((r)-2-methyloxiran-2-yl)-1-oxopentan-2-ylamino)-1-oxo-3-phenylpropan-2-yl)-2-((s)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide

21. Carfilzomib [usan]

22. Cas-868540-17-4

23. Carfilzomib [usan:inn]

24. Mfcd11040997

25. Kyprolis (tn)

26. Carfilzomib; Pr171

27. Carfilzomib [mi]

28. Carfilzomib [inn]

29. Carfilzomib [jan]

30. Carfilzomib [vandf]

31. Schembl85165

32. Carfilzomib [who-dd]

33. Mls006011102

34. Carfilzomib (jan/usan/inn)

35. Gtpl7420

36. Dtxsid4048690

37. Amy4357

38. Carfilzomib [orange Book]

39. Ex-a2037

40. Ono-7057

41. Tox21_113079

42. Bdbm50277889

43. Nsc756640

44. Nsc758252

45. S2853

46. Zinc49841054

47. Akos025401910

48. Tox21_113079_1

49. Ccg-270405

50. Cs-0984

51. Cs-w004540

52. Db08889

53. Nsc 758252

54. Nsc-756640

55. Ncgc00249613-02

56. Ncgc00249613-03

57. Ncgc00249613-08

58. Ncgc00249613-11

59. Ncgc00249613-13

60. Ac-27051

61. As-17059

62. Hy-10455

63. Smr004660024

64. Sw218090-2

65. D08880

66. Ab01565867_02

67. Sr-01000941582

68. J-501773

69. Sr-01000941582-1

70. Q15366934

71. (alphas)-alpha-((4-morpholinylacetyl)amino)benzenebutanoyl-l-leucyl-n-((1s)-3-methyl-1-(((2r)-2-methyloxiranyl)carbonyl)butyl)-l-phe Nylalaninamide

72. (s)-4-methyl-n-((s)-1-((s)-4-methyl-1-((r)-2- Methyloxiran-2-yl)-1 -oxopentan-2-ylamino)-1-oxo-3-phenylpropan-2-yl)-2-((s)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide

73. L-phenylalaninamide, (.alpha.s)-.alpha.-((4-morpholinylacetyl)amino)benzenebutanoyl-l-leucyl-n-((1s)-3-methyl-1-(((2r)-2-methyloxiranyl)carbonyl)butyl)-

74. L-phenylalaninamide, (alphas)-alpha-((4-morpholinylacetyl)amino)benzenebutanoyl-l-leucyl-n-((1s)-3-methyl-1-(((2r)-2-methyloxiranyl)carbonyl)butyl)-

2.4 Create Date
2006-10-26
3 Chemical and Physical Properties
Molecular Weight 719.9 g/mol
Molecular Formula C40H57N5O7
XLogP34.7
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count8
Rotatable Bond Count20
Exact Mass719.42579917 g/mol
Monoisotopic Mass719.42579917 g/mol
Topological Polar Surface Area159 Ų
Heavy Atom Count52
Formal Charge0
Complexity1180
Isotope Atom Count0
Defined Atom Stereocenter Count5
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 2  
Drug NameKyprolis
PubMed HealthCarfilzomib (Injection)
Drug ClassesAntineoplastic Agent
Drug LabelKYPROLIS (carfilzomib) for Injection is an antineoplastic agent available for intravenous use only. KYPROLIS is a sterile, white to off-white lyophilized powder and is available as a single-use vial. Each vial of KYPROLIS contains 60mg of carfilzom...
Active IngredientCarfilzomib
Dosage FormPowder
RouteIntravenous
Strength60mg/vial
Market StatusPrescription
CompanyOnyx Pharms

2 of 2  
Drug NameKyprolis
PubMed HealthCarfilzomib (Injection)
Drug ClassesAntineoplastic Agent
Drug LabelKYPROLIS (carfilzomib) for Injection is an antineoplastic agent available for intravenous use only. KYPROLIS is a sterile, white to off-white lyophilized powder and is available as a single-use vial. Each vial of KYPROLIS contains 60mg of carfilzom...
Active IngredientCarfilzomib
Dosage FormPowder
RouteIntravenous
Strength60mg/vial
Market StatusPrescription
CompanyOnyx Pharms

4.2 Drug Indication

Carfilzomib is indicated for the treatment of adult patients with relapsed or refractory multiple myeloma who have received one to three lines of therapy in combination with lenalidomide and dexamethasone; or dexamethasone; or daratumumab and dexamethasone; or daratumumab and hyaluronidase-fihj and dexamethasone. It is also indicated as a single agent for the treatment of patients with relapsed or refractory multiple myeloma who have received one or more lines of therapy.


FDA Label


Kyprolis in combination with daratumumab and dexamethasone, with lenalidomide and dexamethasone, or with dexamethasone alone is indicated for the treatment of adult patients with multiple myeloma who have received at least one prior therapy.


Treatment of Multiple Myeloma


Treatment of acute lymphoblastic leukaemia


5 Pharmacology and Biochemistry
5.1 Pharmacology

Intravenous carfilzomib administration resulted in suppression of proteasome chymotrypsin-like activity when measured in blood 1 hour after the first dose. On Day 1 of Cycle 1, proteasome inhibition in peripheral blood mononuclear cells (PBMCs) ranged from 79% to 89% at 15 mg/m2, and from 82% to 83% at 20 mg/m2. In addition, carfilzomib administration resulted in inhibition of the LMP2 and MECL1 subunits of the immunoproteasome ranging from 26% to 32% and 41% to 49%, respectively, at 20 mg/m2. Proteasome inhibition was maintained for 48 hours following the first dose of carfilzomib for each week of dosing. Resistance against carfilzomib has been observed and although the mechanism has not been confirmed, it is thought that up-regulation of P-glycoprotein may be a contributing factor. Furthermore, studies suggest that carfilzomib is more potent than bortezomib.


5.2 FDA Pharmacological Classification
5.2.1 Active Moiety
CARFILZOMIB
5.2.2 FDA UNII
72X6E3J5AR
5.2.3 Pharmacological Classes
Proteasome Inhibitors [MoA]; Proteasome Inhibitor [EPC]
5.3 ATC Code

L01XX45


L01XX45

S76 | LUXPHARMA | Pharmaceuticals Marketed in Luxembourg | Pharmaceuticals marketed in Luxembourg, as published by d'Gesondheetskeess (CNS, la caisse nationale de sante, www.cns.lu), mapped by name to structures using CompTox by R. Singh et al. (in prep.). List downloaded from https://cns.public.lu/en/legislations/textes-coordonnes/liste-med-comm.html. Dataset DOI:10.5281/zenodo.4587355


L - Antineoplastic and immunomodulating agents

L01 - Antineoplastic agents

L01X - Other antineoplastic agents

L01XG - Proteasome inhibitors

L01XG02 - Carfilzomib


5.4 Absorption, Distribution and Excretion

Absorption

Cmax, single IV dose of 27 mg/m^2 = 4232 ng/mL; AUC, single IV dose of 27 mg/m^2 = 379 nghr/mL; Carfilzomib does not accumulation in the systemic. At doses between 20 and 36 mg/m2, there was a dose-dependent increase in exposure.


Volume of Distribution

Vd, steady state, 20 mg/m^2 = 28 L


Clearance

Systemic clearance = 151 - 263 L/hour. As this value exceeds hepatic blood flow, it suggests that carfilozmib is cleared extrahepatically.


5.5 Metabolism/Metabolites

Carfilzomib was rapidly and extensively metabolized by the liver. The predominant metabolites were the peptide fragments and the diol of carfilzomib which suggests that the main metabolic pathways are peptidase cleavage and epoxide hydrolysis. The cytochrome P450 enzyme system is minimally involved in the metabolism of carfilzomib. All metabolites are inactive.


5.6 Biological Half-Life

Following intravenous administration of doses 15 mg/m^2, carfilzomib was rapidly cleared from the systemic circulation with a half-life of 1 hour on Day 1 of Cycle 1.


5.7 Mechanism of Action

Carfilzomib is made up of four modified peptides and acts as a proteasome inhibitor. Carfilzomib irreversibly and selectively binds to N-terminal threonine-containing active sites of the 20S proteasome, the proteolytic core particle within the 26S proteasome. This 20S core has 3 catalytic active sites: the chymotrypsin, trypsin, and caspase-like sites. Inhibition of the chymotrypsin-like site by carfilzomib (5 and 5i subunits) is the most effective target in decreasing cellular proliferation, ultimately resulting in cell cycle arrest and apoptosis of cancerous cells. At higher doses, carfilzomib will inhibit the trypsin-and capase-like sites.