Clonidine

Clonidine is a centrally acting alpha-2 adrenergic agonist that reduces sympathetic outflow, used for hypertension, ADHD, menopausal flushing, opioid withdrawal and neuropathic pain across multiple formulations from oral tablets to transdermal patches. Simson Pharma's Clonidine reference standard and impurities support stability-indicating testing across this broad multi-indication therapy.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Clonidine 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

Clonidine Hydrochloride
Clonidine Hydrochloride
  • CAT. No.C120000
  • CAS. No.4205-91-8
  • Mol. F.C9H9Cl2N3.HCl
  • Mol. W.266.55 g/mol
  • Stock Status:Instock
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Clonidine EP Impurity A
Clonidine EP Impurity A
  • CAT. No.C120001
  • CAS. No.5391-39-9
  • Mol. F.C5H8N2O2
  • Mol. W.128.13 g/mol
  • Stock Status:Instock
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Clonidine EP Impurity B
Clonidine EP Impurity B
  • CAT. No.C120002
  • CAS. No.54707-71-0
  • Mol. F.C11H11Cl2N3O
  • Mol. W.272.13 g/mol
  • Stock Status:Instock
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Clonidine EP Impurity C
Clonidine EP Impurity C
  • CAT. No.C120003
  • CAS. No.608-31-1
  • Mol. F.C6H5Cl2N
  • Mol. W.162.02 g/mol
  • Stock Status:Custom Synthesis
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Clonidine Impurity 2
Clonidine Impurity 2
  • CAT. No.C120005
  • CAS. No.10113-35-6
  • Mol. F.C7H5Cl2NO
  • Mol. W.190.02 g/mol
  • Stock Status:Instock
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Clonidine Impurity 1
Clonidine Impurity 1
  • CAT. No.C120006
  • CAS. No.21709-18-2
  • Mol. F.C7H3Cl4N
  • Mol. W.242.92 g/mol
  • Stock Status:Instock
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4-Hydroxy Clonidine
4-Hydroxy Clonidine
  • CAT. No.C120007
  • CAS. No.57101-48-1
  • Mol. F.C9H9Cl2N3O
  • Mol. W.246.09 g/mol
  • Stock Status:Custom Synthesis
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2-Imidazolidone
2-Imidazolidone
  • CAT. No.C120008
  • CAS. No.120-93-4
  • Mol. F.C3H6N2O
  • Mol. W.86.09 g/mol
  • Stock Status:Custom Synthesis
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N,N'-diacetyl-2-imidazolidinone
N,N'-diacetyl-2-imidazolidinone
  • CAT. No.C120009
  • CAS. No.5391-40-2
  • Mol. F.C7H10N2O3
  • Mol. W.170.17 g/mol
  • Stock Status:Instock
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2,3-Dichloroaniline
2,3-Dichloroaniline
  • CAT. No.C120010
  • CAS. No.608-27-5
  • Mol. F.C6H5Cl2N
  • Mol. W.162.01 g/mol
  • Stock Status:Instock
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2,4-Dichloroaniline
2,4-Dichloroaniline
  • CAT. No.C120011
  • CAS. No.554-00-7
  • Mol. F.C6H5Cl2N
  • Mol. W.162.01 g/mol
  • Stock Status:Custom Synthesis
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Clonidine Impurity 5
Clonidine Impurity 5
  • CAT. No.C120012
  • CAS. No.39075-78-0
  • Mol. F.C7H7Cl2N3
  • Mol. W.204.05 g/mol
  • Stock Status:Instock
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Clonidine Dimer Impurity
Clonidine Dimer Impurity
  • CAT. No.C120013
  • CAS. No.2519452-56-1
  • Mol. F.C20H20Cl4N6
  • Mol. W.486.23 g/mol
  • Stock Status:Custom Synthesis
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2,4,6-Trichloroaniline
2,4,6-Trichloroaniline
  • CAT. No.C120014
  • CAS. No.634-93-5
  • Mol. F.C6H4Cl3N
  • Mol. W.196.46 g/mol
  • Stock Status:Custom Synthesis
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2,6-dichloro-N,N-dimethylaniline
2,6-dichloro-N,N-dimethylaniline
  • CAT. No.C120015
  • CAS. No.56961-05-8
  • Mol. F.C8H9Cl2N
  • Mol. W.190.07 g/mol
  • Stock Status:Custom Synthesis
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1-(2-aminoethyl)-2-(2,6-dichlorophenyl)guanidine
1-(2-aminoethyl)-2-(2,6-dichlorophenyl)guanidine
  • CAT. No.C120016
  • CAS. No.68870-05-3
  • Mol. F.C9H12Cl2N4
  • Mol. W.247.12 g/mol
  • Stock Status:Custom Synthesis
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4,4-(carbonylbis(azanediyl))dibenzenesulfonic acid
4,4-(carbonylbis(azanediyl))dibenzenesulfonic acid
  • CAT. No.C120017
  • CAS. No.6052-50-2
  • Mol. F.C13H12N2O7S2
  • Mol. W.372.37 g/mol
  • Stock Status:Custom Synthesis
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1,1-(ethane-1,2-diyl)bis(3-(2,6-dichlorophenyl)guanidine)
1,1-(ethane-1,2-diyl)bis(3-(2,6-dichlorophenyl)guanidine)
  • CAT. No.C120018
  • CAS. No.NA
  • Mol. F.C16H16Cl4N6
  • Mol. W.434.15 g/mol
  • Stock Status:Custom Synthesis
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4,4'-(carbonylbis(azanediyl))bis(3,5-dichloro)benzenesulfonic acid
4,4'-(carbonylbis(azanediyl))bis(3,5-dichloro)benzenesulfonic acid
  • CAT. No.C120019
  • CAS. No.NA
  • Mol. F.C13H8Cl4N2O7S2
  • Mol. W.510.15 g/mol
  • Stock Status:Custom Synthesis
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(Z)-methyl N`-(2,6-dichlorophenyl)-N-(2-hydroxyethyl)carbamimidothioate
(Z)-methyl N`-(2,6-dichlorophenyl)-N-(2-hydroxyethyl)carbamimidothioate
  • CAT. No.C120020
  • CAS. No.NA
  • Mol. F.C10H12Cl2N2OS
  • Mol. W.279.19 g/mol
  • Stock Status:Instock
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Di-Nitroso-Clonidine
Di-Nitroso-Clonidine
  • CAT. No.C120021
  • CAS. No.148950-50-9
  • Mol. F.C9H7Cl2N5O2
  • Mol. W.288.09 g/mol
  • Stock Status:Instock
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CLONIDINE IMPURITIES(N-((2,4,6-Trichlorophenyl) carbamothioyl)benzamide)
CLONIDINE IMPURITIES(N-((2,4,6-Trichlorophenyl) carbamothioyl)benzamide)
  • CAT. No.C120022
  • CAS. No.96938-54-4
  • Mol. F.C14H9Cl3N2OS
  • Mol. W.359.66 g/mol
  • Stock Status:Custom Synthesis
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1-(2,4,6-Trichlorophenyl) thiourea
1-(2,4,6-Trichlorophenyl) thiourea
  • CAT. No.C120023
  • CAS. No.31118-87-3
  • Mol. F.C7H5Cl3N2S
  • Mol. W.255.55 g/mol
  • Stock Status:Custom Synthesis
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CLONIDINE IMPURITIES(2,4,6-Trichloro-N-(imidazolidin-2-ylidene)aniline)
CLONIDINE IMPURITIES(2,4,6-Trichloro-N-(imidazolidin-2-ylidene)aniline)
  • CAT. No.C120025
  • CAS. No.21571-08-4
  • Mol. F.C9H8Cl3N3
  • Mol. W.264.54 g/mol
  • Stock Status:Custom Synthesis
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Methyl (2-aminoethyl)carbamimidothioate
Methyl (2-aminoethyl)carbamimidothioate
  • CAT. No.C120026
  • CAS. No.21571-08-4
  • Mol. F.C4H11N3S
  • Mol. W.NA
  • Stock Status:Custom Synthesis
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N-Nitroso Clonidine
N-Nitroso Clonidine
  • CAT. No.C120027
  • CAS. No.NA
  • Mol. F.C9H8Cl2N4O
  • Mol. W.259.09 g/mol
  • Stock Status:Under Synthesis
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N-Nitroso-Clonidine (Possibility 2)
N-Nitroso-Clonidine (Possibility 2)
  • CAT. No.C120028
  • CAS. No.148950-49-6
  • Mol. F.C9H8Cl2N4O
  • Mol. W.259.09 g/mol
  • Stock Status:Instock
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Methylnitrosamino-N,N-dimethylethylamine
Methylnitrosamino-N,N-dimethylethylamine
  • CAT. No.C120029
  • CAS. No.23834-30-2
  • Mol. F.C5H13N3O
  • Mol. W.131.18 g/mol
  • Stock Status:Custom Synthesis
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Clonidine USP Related Compound C
Clonidine USP Related Compound C
  • CAT. No.C120031
  • CAS. No.27806-81-1
  • Mol. F.C8H8Cl2N2S
  • Mol. W.235.13 g/mol
  • Stock Status:Custom Synthesis
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Clonidine Impurity-C(2,6-dichloroaniline)
Clonidine Impurity-C(2,6-dichloroaniline)
  • CAT. No.D010006
  • CAS. No.608-31-1
  • Mol. F.Cl2C6H3NH2
  • Mol. W.162.02 g/mol
  • Stock Status:Instock
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Isotope Labelled Compounds

Clonidine-D4 Hydrochloride
Clonidine-D4 Hydrochloride
  • CAT. No.C120004
  • CAS. No.67151-02-4
  • Mol. F.C9H6D4Cl3N3
  • Mol. W.270.58 g/mol
  • Stock Status:Instock
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