Clonidine hydrochloride - ≥98% , Adrenergic receptor alpha-2 agonist, CAS No.4205-91-8, Adrenergic receptor alpha-2 agonist

CAS: 4205-91-8 Cat. No.: C102161 Molecular Weight: 266.55 Beilstein Registry Number: 4163525 EC Number: 224-121-5 PubChem CID: 20179

GRADE & PURITY ≥98%

Synonyms

s2458 | SMR000466276 | 2-((2,6-Dichlorophenyl)imino)imidazolidine monohydrochloride | 2-[(2,6-Dichlorophenyl)amino-2-imidazoline hydrochloride | Clonilou | HMS3678H03 | MFCD00036705 | 2-Imidazoline, 2-(2,6-dichloroanilino)-, monohydrochloride | Apo-Clonid

Storage

Store at 2-8°C

Shipped In

Wet ice

Specifications

Synonyms

s2458 | SMR000466276 | 2-((2, 6-Dichlorophenyl)imino)imidazolidine monohydrochloride | 2-[(2, 6-Dichlorophenyl)amino-2-imidazoline hydrochloride | Clonilou | HMS3678H03 | MFCD00036705 | 2-Imidazoline, 2-(2, 6-dichloroanilino)-, monohydrochloride | Apo-Clonid

Specifications & Purity

≥98%

Biochemical and Physiological Mechanisms

Prototypical I1imidazoline receptor ligand.α2-adrenergic receptor agonist. Antihypertensive. Also thought to enhance autophagy; shown to increase LC3-II levels in PC12 cells.

Storage

Store at 2-8°C

Shipped In

Wet ice

This product requires cold chain shipping. Ground and other economy services are not available.

Action Type

AGONIST

Mechanism of action

Adrenergic receptor alpha-2 agonist

Purity

≥98%

Names and Identifiers

• Pubchem Sid: 504752968
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/504752968
• Canonical Smiles: C1CN=C(N1)NC2=C(C=CC=C2Cl)Cl.Cl
• IUPAC Name: N-(2,6-dichlorophenyl)-4,5-dihydro-1H-imidazol-2-amine;hydrochloride
• InChIKey: ZNIFSRGNXRYGHF-UHFFFAOYSA-N
• INCHI: 1S/C9H9Cl2N3.ClH/c10-6-2-1-3-7(11)8(6)14-9-12-4-5-13-9;/h1-3H,4-5H2,(H2,12,13,14);1H
• Isomeric SMILES: C1CN=C(N1)NC2=C(C=CC=C2Cl)Cl.Cl
• WGK Germany: 3
• RTECS: NJ2490000
• PubChem CID: 20179
• UN Number: 2811
• Molecular Weight: 266.55
• Beilstein: 4163525
• Reaxy-Rn: 4163525

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Benzenoids
    • Class Benzene and substituted derivatives
      • Subclass Halobenzenes
        • Level5 Chlorobenzenes
          • Level6 Dichlorobenzenes

• Kingdom: Organic compounds
• Superclass: Benzenoids
• Class: Benzene and substituted derivatives
• Subclass: Halobenzenes
• Intermediate Tree Nodes: Chlorobenzenes
• Direct Parent: Dichlorobenzenes
• Alternative Parents: Aniline and substituted anilines Aryl chlorides Imidazolines Guanidines Propargyl-type 1,3-dipolar organic compounds Carboximidamides Azacyclic compounds Organopnictogen compounds Organochlorides Hydrochlorides Hydrocarbon derivatives
• Molecular Framework: Aromatic heteromonocyclic compounds
• Substituents: 1,3-dichlorobenzene - Aniline or substituted anilines - Aryl chloride - Aryl halide - 2-imidazoline - Guanidine - Azacycle - Carboximidamide - Propargyl-type 1,3-dipolar organic compound - Organic 1,3-dipolar compound - Organoheterocyclic compound - Organochloride - Organohalogen compound - Hydrochloride - Organonitrogen compound - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Aromatic heteromonocyclic compound
• Description: This compound belongs to the class of organic compounds known as dichlorobenzenes. These are compounds containing a benzene with exactly two chlorine atoms attached to it.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Associated Targets(Human)

SLC22A1 Tchem Solute carrier family 22 member 1 (0 Activities)

Discover Target: SLC22A1

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

ADRA2B Tclin Alpha-2B adrenergic receptor (0 Activities)

Discover Target: ADRA2B

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

ADRA2C Tclin Alpha-2C adrenergic receptor (0 Activities)

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Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

ADRA2A Tclin Alpha-2A adrenergic receptor (1 Activities)

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Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

NISCH Tclin Nischarin (0 Activities)

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Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

ABL1 Tclin Tyrosine-protein kinase ABL (18331 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRB2 Tclin Beta-2 adrenergic receptor (11824 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA2A Tclin Alpha-2a adrenergic receptor (9450 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AGTR1 Tclin Type-1 angiotensin II receptor (5176 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GSK3B Tclin Glycogen synthase kinase-3 beta (11785 Activities)

Discover Target: GSK3B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CSNK1D Tchem Casein kinase I delta (4546 Activities)

Discover Target: CSNK1D

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

S1PR1 Tclin Sphingosine 1-phosphate receptor Edg-1 (5806 Activities)

Discover Target: S1PR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CDK2 Tchem Cyclin-dependent kinase 2 (9050 Activities)

Discover Target: CDK2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GLP1R Tclin Glucagon-like peptide 1 receptor (111429 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

C5AR1 Tclin C5a anaphylatoxin chemotactic receptor (2677 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AURKA Tchem Serine/threonine-protein kinase Aurora-A (10240 Activities)

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U2OS (164939 Activities)

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CX3CR1 Tchem C-X3-C chemokine receptor 1 (1686 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

FPR2 Tchem Lipoxin A4 receptor (3472 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ENGASE Tchem Endo-beta-N-acetylglucosaminidase (63 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

FFAR4 Tchem G-protein coupled receptor 120 (2999 Activities)

Discover Target: FFAR4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

APEX1 Tchem DNA-(apurinic or apyrimidinic site) lyase (38016 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Skin (286 Activities)

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EHMT2 Tchem Histone-lysine N-methyltransferase, H3 lysine-9 specific 3 (93046 Activities)

Discover Target: EHMT2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

BRD4 Tchem Bromodomain-containing protein 4 (13122 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

LMNA Tbio Prelamin-A/C (36751 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

BLM Tchem Bloom syndrome protein (4248 Activities)

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GPR35 Tchem G-protein coupled receptor 35 (2643 Activities)

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SLCO1B1 Tchem Solute carrier organic anion transporter family member 1B1 (2672 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLCO1B3 Tchem Solute carrier organic anion transporter family member 1B3 (2517 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

TRIM24 Tchem Transcription intermediary factor 1-alpha (2087 Activities)

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BRPF1 Tchem Peregrin (2217 Activities)

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HEK-293T (167025 Activities)

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Associated Targets(non-human)

Aplnr Apelin receptor (201 Activities)

Discover Target: Aplnr

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mapk1 MAP kinase ERK2 (650 Activities)

Discover Target: Mapk1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Fgfr3 Fibroblast growth factor receptor 3 (21 Activities)

Discover Target: Fgfr3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Pseudomonas aeruginosa (123386 Activities)

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Klebsiella pneumoniae (43867 Activities)

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Staphylococcus aureus (210822 Activities)

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Acinetobacter baumannii (41033 Activities)

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Escherichia coli (133304 Activities)

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Cryptococcus neoformans (21258 Activities)

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Candida albicans (78123 Activities)

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Rattus norvegicus (775804 Activities)

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Npsr1 Neuropeptide S receptor (260 Activities)

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Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

rep Replicase polyprotein 1ab (378 Activities)

Discover Target: rep

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Gpr119 Glucose-dependent insulinotropic receptor (270 Activities)

Discover Target: Gpr119

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TyR1 (19 Activities)

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SARS-CoV-2 (38078 Activities)

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Mechanisms of Action

Chemical and Physical Properties

• Solubility: Solvent:water, Max Conc. mg/mL: 26.66, Max Conc. mM: 100; Solvent:DMSO, Max Conc. mg/mL: 13.33, Max Conc. mM: 50
• Sensitivity: Light Sensitive
• Melt Point(°C): 312°C
• Molecular Weight: 266.600 g/mol
• Hydrogen Bond Donor Count: 3
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 2
• Exact Mass: 264.994 Da
• Monoisotopic Mass: 264.994 Da
• Topological Polar Surface Area: 36.400 Ų
• Heavy Atom Count: 15
• Formal Charge: 0
• Complexity: 222.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 2

XLogP3

References

1. Zhiqin Liu, Yufeng Xu, Wei Liu, Lin Wang, Zhen Dong, Jianguo Zeng.  (2025)  Macleaya cordata protopine total alkaloids as potential treatment for diarrhoea: Mechanistic insights and target identification.  RESEARCH IN VETERINARY SCIENCE,      [PMID:40184723] [10.1016/j.rvsc.2025.105633]