Buspirone

Buspirone is a partial 5-HT1A receptor agonist with anxiolytic activity and no dependence potential, used for generalised anxiety disorder as an alternative to benzodiazepines. Simson Pharma's Buspirone reference standard and impurities support compendial testing for this non-benzodiazepine anxiolytic.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Buspirone Reference Standards, pharmacopoeial reference materials, and its related impurities to pharmaceutical manufacturers, CROs, analytical laboratories, universities, and regulatory organizations worldwide. To service the Europe and America market efficiently, Simson Pharma Limited has set up Simson Pharma Global Ltd. in United Kingdom and Simson Pharma Global LLC in USA respectively.

Pharmaceutical Reference Standards / Impurity Standards

Buspirone Hydrochloride
Buspirone Hydrochloride
  • CAT. No.B290000
  • CAS. No.33386-08-2
  • Mol. F.C21H32ClN5O2
  • Mol. W.421.96 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity K
Buspirone EP Impurity K
  • CAT. No.B290002
  • CAS. No.1075-89-4
  • Mol. F.C9H13NO2
  • Mol. W.167.21 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity E
Buspirone EP Impurity E
  • CAT. No.B290003
  • CAS. No.257877-43-3
  • Mol. F.C21H33N5O3
  • Mol. W.403.52 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity C
Buspirone EP Impurity C
  • CAT. No.B290004
  • CAS. No.257877-45-5
  • Mol. F.C20H30N8
  • Mol. W.382.51 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity A
Buspirone EP Impurity A
  • CAT. No.B290006
  • CAS. No.20980-22-7
  • Mol. F.C8H12N4
  • Mol. W.164.21 g/mol
  • Stock Status:Instock
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Buspirone 6-Hydroxy Metabolite
Buspirone 6-Hydroxy Metabolite
  • CAT. No.B290007
  • CAS. No.125481-61-0
  • Mol. F.C21H31N5O3
  • Mol. W.401.50 g/mol
  • Stock Status:Custom Synthesis
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Buspirone EP Impurity D Hydrochloride
Buspirone EP Impurity D Hydrochloride
  • CAT. No.B290008
  • CAS. No.NA
  • Mol. F.C24H39ClN8O
  • Mol. W.491.07 g/mol
  • Stock Status:Custom Synthesis
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Buspirone EP Impurity D
Buspirone EP Impurity D
  • CAT. No.B290008A
  • CAS. No.2724726-67-2
  • Mol. F.C24H38N8O
  • Mol. W.454.61 g/mol
  • Stock Status:Instock
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Buspirone BispyrimidinylpiperazinylButane Impurity
Buspirone BispyrimidinylpiperazinylButane Impurity
  • CAT. No.B290009
  • CAS. No.257877-45-5
  • Mol. F.C20H30N8
  • Mol. W.382.51 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity J Hydrochloride
Buspirone EP Impurity J Hydrochloride
  • CAT. No.B290010
  • CAS. No.NA
  • Mol. F.C34H53ClN6O5
  • Mol. W.661.27 g/mol
  • Stock Status:Custom Synthesis
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Buspirone EP Impurity J
Buspirone EP Impurity J
  • CAT. No.B290010A
  • CAS. No.2726492-72-2
  • Mol. F.C34H52N6O5
  • Mol. W.624.81 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity L
Buspirone EP Impurity L
  • CAT. No.B290011
  • CAS. No.21098-11-3
  • Mol. F.C13H20ClNO2
  • Mol. W.257.76 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity N
Buspirone EP Impurity N
  • CAT. No.B290012
  • CAS. No.257877-44-4
  • Mol. F.C22H32N2O4
  • Mol. W.388.50 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity G
Buspirone EP Impurity G
  • CAT. No.B290013
  • CAS. No.84746-24-7
  • Mol. F.C12H14N6
  • Mol. W.242.28 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity M
Buspirone EP Impurity M
  • CAT. No.B290014
  • CAS. No.80827-62-9
  • Mol. F.C13H20BrNO2
  • Mol. W.302.21 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity B
Buspirone EP Impurity B
  • CAT. No.B290015
  • CAS. No.81461-73-6
  • Mol. F.C12H19BrN4
  • Mol. W.299.21 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity F
Buspirone EP Impurity F
  • CAT. No.B290016
  • CAS. No.2512210-24-9
  • Mol. F.C33H51N9O3
  • Mol. W.621.82 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity F Hydrochloride
Buspirone EP Impurity F Hydrochloride
  • CAT. No.B290016A
  • CAS. No.NA
  • Mol. F.C33H52ClN9O3
  • Mol. W.658.32 g/mol
  • Stock Status:Custom Synthesis
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Buspirone EP Impurity H
Buspirone EP Impurity H
  • CAT. No.B290017
  • CAS. No.2708578-34-9
  • Mol. F.C33H50N8O4
  • Mol. W.622.82 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity I
Buspirone EP Impurity I
  • CAT. No.B290018
  • CAS. No.2725354-99-2
  • Mol. F.C21H30ClN5O2
  • Mol. W.419.95 g/mol
  • Stock Status:Instock
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Buspirone N-Oxide
Buspirone N-Oxide
  • CAT. No.B290019
  • CAS. No.220747-81-9
  • Mol. F.C21H31N5O3
  • Mol. W.401.50 g/mol
  • Stock Status:Instock
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Buspirone 5-Hydroxy Metabolite
Buspirone 5-Hydroxy Metabolite
  • CAT. No.B290021
  • CAS. No.105496-33-1
  • Mol. F.C21H31N5O3
  • Mol. W.401.50 g/mol
  • Stock Status:Custom Synthesis
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Tetramethylene-Dicyanoglutarimide Triethylaminne Salt
Tetramethylene-Dicyanoglutarimide Triethylaminne Salt
  • CAT. No.B290022
  • CAS. No.NA
  • Mol. F.C17H26N4O2
  • Mol. W.318.41 g/mol
  • Stock Status:Custom Synthesis
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Buspirone Impurity 3
Buspirone Impurity 3
  • CAT. No.B290023
  • CAS. No.42940-56-7
  • Mol. F.C11H11N3O2
  • Mol. W.217.22 g/mol
  • Stock Status:Custom Synthesis
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Buspirone EP Impurity E Hydrochloride
Buspirone EP Impurity E Hydrochloride
  • CAT. No.B290025
  • CAS. No.257877-46-6
  • Mol. F.C21H34ClN5O3
  • Mol. W.439.98 g/mol
  • Stock Status:Instock
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Buspirone Nitroso Impurity 1
Buspirone Nitroso Impurity 1
  • CAT. No.B290026
  • CAS. No.872826-80-7
  • Mol. F.C8H11N5O
  • Mol. W.193.21 g/mol
  • Stock Status:Instock
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2-(1-(2-amino-2-oxoethyl)cyclopentyl)acetic acid
2-(1-(2-amino-2-oxoethyl)cyclopentyl)acetic acid
  • CAT. No.B290028
  • CAS. No.60143-00-2
  • Mol. F.C9H15NO3
  • Mol. W.185.22 g/mol
  • Stock Status:Custom Synthesis
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Buspirone EP Impurity B Chloride
Buspirone EP Impurity B Chloride
  • CAT. No.B290029
  • CAS. No.81461-72-5
  • Mol. F.C12H19ClN4
  • Mol. W.254.76 g/mol
  • Stock Status:Custom Synthesis
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3,3-Tetramethyleneglutaric Anhydride
3,3-Tetramethyleneglutaric Anhydride
  • CAT. No.B290030
  • CAS. No.5662-95-3
  • Mol. F.C9H12O3
  • Mol. W.168.19 g/mol
  • Stock Status:Custom Synthesis
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Buspirone Nitroso Impurity 2
Buspirone Nitroso Impurity 2
  • CAT. No.B290031
  • CAS. No.NA
  • Mol. F.C9H12N2O3
  • Mol. W.196.20 g/mol
  • Stock Status:Custom Synthesis
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Isotope Labelled Compounds

Buspirone-D8 Dihydrochloride
Buspirone-D8 Dihydrochloride
  • CAT. No.B290001
  • CAS. No.204395-49-3 (free base)
  • Mol. F.C21H25D8Cl2N5O2
  • Mol. W.466.47 g/mol
  • Stock Status:Under Synthesis
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6-Hydroxy Buspirone-D8
6-Hydroxy Buspirone-D8
  • CAT. No.B290024
  • CAS. No.1189644-16-3
  • Mol. F.C21H23D8N5O3
  • Mol. W.409.55 g/mol
  • Stock Status:Custom Synthesis
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Buspirone Hydrochloride D8
Buspirone Hydrochloride D8
  • CAT. No.B290032
  • CAS. No.NA
  • Mol. F.C21H23D8N5O2.HCl
  • Mol. W.430.01 g/mol
  • Stock Status:Instock
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Buspirone EP Impurity A D8
Buspirone EP Impurity A D8
  • CAT. No.B290033
  • CAS. No.1309283-31-5
  • Mol. F.C8H4D8N4
  • Mol. W.172.26 g/mol
  • Stock Status:Please Enquire
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