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Riociguat
Also known as: 625115-55-1, Adempas, Bay 63-2521, Riociguat (bay 63-2521), Bay-63-2521, Ru3fe2y4xi
Molecular Formula
C20H19FN8O2
Molecular Weight
422.4  g/mol
InChI Key
WXXSNCNJFUAIDG-UHFFFAOYSA-N
FDA UNII
RU3FE2Y4XI

Riociguat is a soluble guanylate cyclase (sGC) agonist approved in the USA, Europe and several other regions for patients with group I PAH (pulmonary arterial hypertension) in WHO FC II or III; and for the treatment of patients with inoperable CTEPH (chronic thromboembolic pulmonary hypertension), or persistent/recurrent PH (pulmonary hypertension) after pulmonary endarterectomy in WHO FC II or III. Riociguat is marketed under the brand Adempas by Bayer HealthCare Pharmaceuticals. Treatment with riociguat costs USD $7,500 for 30 days of treatment.
Riociguat is a Soluble Guanylate Cyclase Stimulator. The mechanism of action of riociguat is as a Guanylate Cyclase Stimulator.
1 2D Structure

Riociguat

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
methyl N-[4,6-diamino-2-[1-[(2-fluorophenyl)methyl]pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl]-N-methylcarbamate
2.1.2 InChI
InChI=1S/C20H19FN8O2/c1-28(20(30)31-2)15-16(22)25-18(26-17(15)23)14-12-7-5-9-24-19(12)29(27-14)10-11-6-3-4-8-13(11)21/h3-9H,10H2,1-2H3,(H4,22,23,25,26)
2.1.3 InChI Key
WXXSNCNJFUAIDG-UHFFFAOYSA-N
2.1.4 Canonical SMILES
CN(C1=C(N=C(N=C1N)C2=NN(C3=C2C=CC=N3)CC4=CC=CC=C4F)N)C(=O)OC
2.2 Other Identifiers
2.2.1 UNII
RU3FE2Y4XI
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Adempas

2. Bay 63-2521

3. Bay-63-2521

2.3.2 Depositor-Supplied Synonyms

1. 625115-55-1

2. Adempas

3. Bay 63-2521

4. Riociguat (bay 63-2521)

5. Bay-63-2521

6. Ru3fe2y4xi

7. Methyl (4,6-diamino-2-(1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridin-3-yl)pyrimidin-5-yl)(methyl)carbamate

8. Methyl N-[4,6-diamino-2-[1-[(2-fluorophenyl)methyl]pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl]-n-methylcarbamate

9. Chebi:76018

10. 1304478-72-5

11. N-[4,6-diamino-2-[1-[(2-fluorophenyl)methyl]-1h-pyrazolo[3,4-b]pyridin-3-yl]-5-pyrimidinyl]-n-methylcarbamic Acid Methyl Ester

12. Methyl N-(4,6-diamino-2-{1-((2-fluorophenyl)methyl)-1h-pyrazolo(3,4-b)pyridin-3-yl}pyrimidin-5-yl)-n-methylcarbamate

13. Methyl N-(4,6-diamino-2-{1-[(2-fluorophenyl)methyl]-1h-pyrazolo[3,4-b]pyridin-3-yl}pyrimidin-5-yl)-n-methylcarbamate

14. Riociguat [inn]

15. Methyl ~{n}-[4,6-bis(azanyl)-2-[1-[(2-fluorophenyl)methyl]pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl]-~{n}-methyl-carbamate

16. Methyl 4,6-diamino-2-(1-(2-fluorobenzyl)-1h-pyrazolo(3,4-b)pyridin-3-yl)-5-pyrimidinyl(methyl)carbamate

17. Unii-ru3fe2y4xi

18. Riociguatum

19. Riociguate

20. Riociguat [usan:inn:jan]

21. Riocguat-d3

22. Methyl 4,6-diamino-2-[1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridin-3-yl]-5-pyrimidinyl(methyl)carbamate

23. Methyl N-(4,6-diamino-2-(1-((2-fluorophenyl)methyl)-1h-pyrazolo(3,4-b)pyridin-3-yl)pyrimidin-5-yl)-n-methylcarbamate

24. Adempas (tn)

25. Bay 632521

26. Riociguat [jan]

27. Riociguat [mi]

28. Riociguat [usan]

29. Riociguat [vandf]

30. Riociguat [usp-rs]

31. Riociguat [who-dd]

32. Bay 63-2521,riociguat

33. Riociguat (jan/usan/inn)

34. Schembl245457

35. Gtpl5257

36. Riociguat [orange Book]

37. Chembl2107834

38. Riociguat [ep Monograph]

39. Amy4218

40. Dtxsid50978109

41. Riociguat [usp Monograph]

42. Bcp04750

43. Bcp23980

44. Ex-a2023

45. Zinc3819392

46. Riociguat,cas:625115-55-1

47. Mfcd19443708

48. S8135

49. Akos015900718

50. Akos032950011

51. Bay-632521

52. Bcp9000382

53. Ccg-268912

54. Cs-0584

55. Db08931

56. Pb25734

57. Ncgc00379065-03

58. Ncgc00379065-04

59. Ncgc00379065-05

60. [4,6-diamino-2-[1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl]methylcarbamic Acid Methyl Ester

61. Ac-27647

62. As-19299

63. Hy-14779

64. Bcp0726000023

65. Db-073136

66. Ft-0760451

67. Bay 63-2521;bay 632521

68. D09572

69. Bay 63-2521; Bay 632521

70. 115r551

71. Q2154494

72. Bay 63-2521-d3; Bay 632521-d3; Methyl [4,6-diamino-2-[1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl]methylcarbamate-d3

73. Carbamic Acid, (4,6-diamino-2-(1-((2-fluorophenyl)methyl)-1h-pyrazolo(3,4-b)pyridin-3-yl)-5-pyrimidinyl)methyl-, Methyl Ester

74. Carbamic Acid, N-(4,6-diamino-2-(1-((2-fluorophenyl)methyl)-1h-pyrazolo(3,4-b)pyridin-3-yl)-5-pyrimidinyl)-n-methyl-, Methyl Ester

75. Gzo

76. Methyl {4,6-diamino-2-[1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl}methylcarbamate

77. Methyl N-[4,6-diamino-2-[1-[(2-fluorophenyl)methyl]-1h-pyrazolo[3,4-b]pyridin-3-yl]-5-pyrimidinyl]-n-methyl-carbaminate

2.4 Create Date
2006-10-26
3 Chemical and Physical Properties
Molecular Weight 422.4 g/mol
Molecular Formula C20H19FN8O2
XLogP31.6
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count9
Rotatable Bond Count5
Exact Mass422.16150004 g/mol
Monoisotopic Mass422.16150004 g/mol
Topological Polar Surface Area138 Ų
Heavy Atom Count31
Formal Charge0
Complexity618
Isotope Atom Count0
Defined Atom Stereocenter Count0
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 NameAdempas
PubMed HealthRiociguat (By mouth)
Drug ClassesCardiovascular Agent
Drug LabelAdempas (riociguat) is a tablet for oral administration. Riociguat is methyl 4,6-diamino-2-[1-(2-fluorobenzyl)-1H-pyrazolo [3,4-b]pyridin-3-yl]-5-pyrimidinyl(methyl)carbamate with the following structural formula:C20H19FN8O2Riociguat is a white to ye...
Active IngredientRiociguat
Dosage FormTablet
RouteOral
Strength2.5mg; 1.5mg; 0.5mg; 2mg; 1mg
Market StatusPrescription
CompanyBayer Hlthcare

2 of 2  
Drug NameAdempas
PubMed HealthRiociguat (By mouth)
Drug ClassesCardiovascular Agent
Drug LabelAdempas (riociguat) is a tablet for oral administration. Riociguat is methyl 4,6-diamino-2-[1-(2-fluorobenzyl)-1H-pyrazolo [3,4-b]pyridin-3-yl]-5-pyrimidinyl(methyl)carbamate with the following structural formula:C20H19FN8O2Riociguat is a white to ye...
Active IngredientRiociguat
Dosage FormTablet
RouteOral
Strength2.5mg; 1.5mg; 0.5mg; 2mg; 1mg
Market StatusPrescription
CompanyBayer Hlthcare

4.2 Drug Indication

Riociguat is indicated for the treatment of adults with persistent/recurrent chronic thromboembolic pulmonary hypertension (CTEPH), (WHO Group 4) after surgical treatment, or inoperable CTEPH, to improve exercise capacity and WHO functional class. Riociguat is indicated for the treatment of adults with pulmonary arterial hypertension (PAH), (WHO Group 1), to improve exercise capacity, WHO functional class and to delay clinical worsening. Efficacy was shown in patients on Riociguat monotherapy or in combination with endothelin receptor antagonists or prostanoids. Studies establishing effectiveness included predominately patients with WHO functional class IIIII and etiologies of idiopathic or heritable PAH (61%) or PAH associated with connective tissue diseases (25%).


FDA Label


Chronic thromboembolic pulmonary hypertension (CTEPH)

Adempas is indicated for the treatment of adult patients with WHO Functional Class (FC) II to III with

- inoperable CTEPH,

- persistent or recurrent CTEPH after surgical treatment,

to improve exercise capacity (see section 5. 1).

Pulmonary arterial hypertension (PAH)

Adempas, as monotherapy or in combination with endothelin receptor antagonists, is indicated for the

treatment of adult patients with pulmonary arterial hypertension (PAH) with WHO Functional Class

(FC) II to III to improve exercise capacity.

Efficacy has been shown in a PAH population including aetiologies of idiopathic or heritable PAH or

PAH associated with connective tissue disease (see section 5. 1).


5 Pharmacology and Biochemistry
5.1 MeSH Pharmacological Classification

Enzyme Activators

Compounds or factors that act on a specific enzyme to increase its activity. (See all compounds classified as Enzyme Activators.)


5.2 FDA Pharmacological Classification
5.2.1 Active Moiety
RIOCIGUAT
5.2.2 FDA UNII
RU3FE2Y4XI
5.2.3 Pharmacological Classes
Soluble Guanylate Cyclase Stimulator [EPC]; Guanylate Cyclase Stimulators [MoA]
5.3 ATC Code

C02KX05


C - Cardiovascular system

C02 - Antihypertensives

C02K - Other antihypertensives

C02KX - Antihypertensives for pulmonary arterial hypertension

C02KX05 - Riociguat


5.4 Absorption, Distribution and Excretion

Absorption

The pharmacokinetics of riociguant are dose proportional from 0.5 mg to 2.5 mg. The absolute bioavailability is approximately 94%. After oral administration, peak plasma concentrations were achieved within 1.5 hours. Food does not affect the bioavailability of riociguat.


Route of Elimination

Riociguat is eliminated in the urine (40%) and feces (53%), largely as metabolites.


Volume of Distribution

Volume of distribution at steady state = 30 L


5.5 Metabolism/Metabolites

The active metabolite (M1) of riociguat is 1/3 to 1/10 as potent as riociguat.


5.6 Biological Half-Life

About 12 hours in patients and 7 hours in healthy subjects.


5.7 Mechanism of Action

Riociguat is a stimulator of soluble guanylate cyclase (sGC), an enzyme in the cardiopulmonary system and the receptor for nitric oxide (NO). When NO binds to sGC, the enzyme catalyzes synthesis of the signaling molecule cyclic guanosine monophosphate (cGMP). Intracellular cGMP plays an important role in regulating processes that influence vascular tone, proliferation, fibrosis and inflammation. Pulmonary hypertension is associated with endothelial dysfunction, impaired synthesis of nitric oxide and insufficient stimulation of the NO-sGC-cGMP pathway. Riociguat has a dual mode of action. It sensitizes sGC to endogenous NO by stabilizing the NO-sGC binding. Riociguat also directly stimulates sGC via a different binding site, independently of NO. Riociguat stimulates the NO-sGC-cGMP pathway and leads to increased generation of cGMP with subsequent vasodilation.


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