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2D Structure
Also known as: 33386-08-2, Buspar, Buspirone hcl, Narol, Buspimen, Buspirone (hydrochloride)
Molecular Formula
C21H32ClN5O2
Molecular Weight
422.0  g/mol
InChI Key
RICLFGYGYQXUFH-UHFFFAOYSA-N
FDA UNII
207LT9J9OC

An anxiolytic agent and serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. Its structure is unrelated to those of the BENZODIAZAPINES, but it has an efficacy comparable to DIAZEPAM.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
8-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]-8-azaspiro[4.5]decane-7,9-dione;hydrochloride
2.1.2 InChI
InChI=1S/C21H31N5O2.ClH/c27-18-16-21(6-1-2-7-21)17-19(28)26(18)11-4-3-10-24-12-14-25(15-13-24)20-22-8-5-9-23-20;/h5,8-9H,1-4,6-7,10-17H2;1H
2.1.3 InChI Key
RICLFGYGYQXUFH-UHFFFAOYSA-N
2.1.4 Canonical SMILES
C1CCC2(C1)CC(=O)N(C(=O)C2)CCCCN3CCN(CC3)C4=NC=CC=N4.Cl
2.2 Other Identifiers
2.2.1 UNII
207LT9J9OC
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Anxut

2. Apo Buspirone

3. Apo-buspirone

4. Bespar

5. Busp

6. Buspar

7. Buspirone

8. Gen Buspirone

9. Gen-buspirone

10. Hydrochloride, Buspirone

11. Lin Buspirone

12. Lin-buspirone

13. Mj 9022 1

14. Mj-9022-1

15. Mj90221

16. N-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-1-cyclopentanediacetamide

17. Neurosine

18. Novo Buspirone

19. Novo-buspirone

20. Nu Buspirone

21. Nu-buspirone

22. Pms Buspirone

23. Pms-buspirone

24. Ratio Buspirone

25. Ratio-buspirone

2.3.2 Depositor-Supplied Synonyms

1. 33386-08-2

2. Buspar

3. Buspirone Hcl

4. Narol

5. Buspimen

6. Buspirone (hydrochloride)

7. Mj 9022-1

8. 8-(4-(4-(pyrimidin-2-yl)piperazin-1-yl)butyl)-8-azaspiro[4.5]decane-7,9-dione Hydrochloride

9. Nsc-751138

10. Nsc-759571

11. Mj-9022-1

12. Mls000069796

13. N-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-1,1-cyclopentanediacetamide Monohydrochloride

14. 207lt9j9oc

15. Apd405

16. Chebi:3224

17. Apd-405

18. Ansitec

19. Anxinil

20. Anxiolan

21. Busirone

22. Buspinol

23. Censpar

24. Effiplen

25. Establix

26. Kallmiren

27. Lucelan

28. Mabuson

29. Normaton

30. Smr000058186

31. Spamilan

32. Barpil

33. Bespar

34. Itagil

35. Nerbet

36. Sburol

37. Travin

38. Tutran

39. Biron

40. Relac

41. 33386-08-2 (hcl)

42. Apo-buspirone

43. 8-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]-8-azaspiro[4.5]decane-7,9-dione;hydrochloride

44. 8-azaspiro(4,5)decane-7,9-dione, 8-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-, Monohydrochloride

45. 8-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]-8-azaspiro[4.5]decane-7,9-dione Hydrochloride

46. 8-{4-[4-(pyrimidin-2-yl)piperazin-1-yl]butyl}-8-azaspiro[4.5]decane-7,9-dione Hydrochloride

47. Buspirone Hydrochloride [usan]

48. Sr-01000075541

49. Einecs 251-489-4

50. Unii-207lt9j9oc

51. C21h31n5o2.hcl

52. Prestwick_711

53. Buspirone Hydrochloride [usan:usp]

54. Buspar (tn)

55. Mfcd00078569

56. Opera_id_707

57. 1,1-cyclopentanediacetimide, N-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-, Hydrochloride

58. 8-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-8-azaspiro(4.5)decane-7,9-dione Hydrochloride

59. Schembl41495

60. Mls001076085

61. Mls002548862

62. Buspirone Hydrochloride (usp)

63. Buspirone Hydrochloride Solution

64. Buspirone For System Suitability

65. Chembl1200399

66. Dtxsid1037193

67. Hms1569i19

68. Hms3750o03

69. Pharmakon1600-02300173

70. Apc-6002

71. Apc-6003

72. Bcp28463

73. Hy-b1115

74. Buspirone Hydrochloride [mi]

75. Tox21_500223

76. Buspirone Hydrochloride [jan]

77. Nsc751138

78. Nsc759571

79. S4256

80. Akos015962019

81. Ac-1905

82. Buspirone Hydrochloride [mart.]

83. Buspirone Hydrochloride [vandf]

84. Ccg-213652

85. Cs-4714

86. H05b847

87. Ks-5163

88. Lp00223

89. Nc00673

90. Nsc 751138

91. Nsc 759571

92. Buspirone Hydrochloride [usp-rs]

93. Buspirone Hydrochloride [who-dd]

94. Ncgc00093692-01

95. Ncgc00093692-02

96. Ncgc00260908-01

97. 8-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-8-azaspiro(4.5)decane-7,9-dione Monohydrochloride

98. Buspirone Hydrochloride [orange Book]

99. Eu-0100223

100. Sw155073-5

101. Buspirone Hydrochloride [ep Monograph]

102. B 7148

103. Buspirone Hydrochloride [usp Monograph]

104. D00702

105. D96810

106. Q-200768

107. Sr-01000075541-1

108. Sr-01000075541-3

109. Sr-01000075541-7

110. Q27105997

111. Buspirone Hydrochloride 1.0 Mg/ml In Methanol (as Free Base)

112. Buspirone Hydrochloride, European Pharmacopoeia (ep) Reference Standard

113. Buspirone Hydrochloride, United States Pharmacopeia (usp) Reference Standard

114. 8-azaspiro[4.5]decane-7, 8-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-, Monohydrochloride

115. Buspirone For System Suitability, European Pharmacopoeia (ep) Reference Standard

116. Buspirone Hydrochloride, Pharmaceutical Secondary Standard; Certified Reference Material

117. 1-[4-(7,9-dioxo-8-azaspiro[4.5]decan-8-yl)butyl]-4-(pyrimidin-2-yl)piperazin-1-ium Chloride

118. 8-[4-[4-(2-pyrimidinyl)-1-pipirazin Yl]butyl]-8-azaspiro[4,5]decane-7,9-dione Hydrochloride

119. 8-[4-[4-(2-pyrimidinyl)-1-pipirazinyl]butyl]-8-azaspiro[4,5]decane-7,9-dione Hydrochloride

120. 8-[4-[4-(pyrimidine-2-yl)-piperazine-1-yl]-butyl]-8-aza-spiro[4.5]decane-7,9-dione Hydrochloride

121. 8-azaspiro[4.5]decane-7,9-dione, 8-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-, Hydrochloride (1:1)

122. Buspirone Hcl Pound>>mj 9022 1 Pound>> Mj-9022-1 Pound>>mj90221 Pound>>mj9022 1 Pound>>mj9022-1

123. Buspirone Hydrochloride Solution, 1.0 Mg/ml In Methanol (as Free Base), Ampule Of 1 Ml, Certified Reference Material

2.4 Create Date
2005-06-24
3 Chemical and Physical Properties
Molecular Weight 422.0 g/mol
Molecular Formula C21H32ClN5O2
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count6
Rotatable Bond Count6
Exact Mass421.2244530 g/mol
Monoisotopic Mass421.2244530 g/mol
Topological Polar Surface Area69.6 Ų
Heavy Atom Count29
Formal Charge0
Complexity529
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count2
4 Drug and Medication Information
4.1 Drug Information
1 of 2  
Drug NameBuspirone hydrochloride
Drug LabelBuspirone hydrochloride tablets USP are an antianxiety agent that is not chemically or pharmacologically related to the benzodiazepines, barbiturates, or other sedative/anxiolytic drugs.Buspirone hydrochloride is a white crystalline, water soluble co...
Active IngredientBuspirone hydrochloride
Dosage FormTablet
RouteOral
Strength5mg; 7.5mg; 30mg; 10mg; 15mg
Market StatusPrescription
CompanyWatson Labs; Teva; Zydus Pharms Usa; Strides Arcolab; Dr Reddys Labs; Prosam Labs; Mylan

2 of 2  
Drug NameBuspirone hydrochloride
Drug LabelBuspirone hydrochloride tablets USP are an antianxiety agent that is not chemically or pharmacologically related to the benzodiazepines, barbiturates, or other sedative/anxiolytic drugs.Buspirone hydrochloride is a white crystalline, water soluble co...
Active IngredientBuspirone hydrochloride
Dosage FormTablet
RouteOral
Strength5mg; 7.5mg; 30mg; 10mg; 15mg
Market StatusPrescription
CompanyWatson Labs; Teva; Zydus Pharms Usa; Strides Arcolab; Dr Reddys Labs; Prosam Labs; Mylan

5 Pharmacology and Biochemistry
5.1 MeSH Pharmacological Classification

Anti-Anxiety Agents

Agents that alleviate ANXIETY, tension, and ANXIETY DISORDERS, promote sedation, and have a calming effect without affecting clarity of consciousness or neurologic conditions. ADRENERGIC BETA-ANTAGONISTS are commonly used in the symptomatic treatment of anxiety but are not included here. (See all compounds classified as Anti-Anxiety Agents.)


Serotonin Receptor Agonists

Endogenous compounds and drugs that bind to and activate SEROTONIN RECEPTORS. Many serotonin receptor agonists are used as ANTIDEPRESSANTS; ANXIOLYTICS; and in the treatment of MIGRAINE DISORDERS. (See all compounds classified as Serotonin Receptor Agonists.)