• USA Home
  • P6503 - Pilocarpine hydrochloride

P6503 Sigma-Aldrich

Pilocarpine hydrochloride

≥99% (titration), powder

Synonym: (3S,4R)-4,5-Dihydro-3-ethyl-4-(1-methyl-1H-imidazol-5-ylmethyl)-2(3H)-furanone hydrochloride

  • CAS Number 54-71-7

  • Empirical Formula (Hill Notation) C11H16N2O2 · HCl

  • Molecular Weight 244.72

  •  Beilstein/REAXYS Number 4034491

  •  EC Number 200-212-5

  •  MDL number MFCD00012722

  •  PubChem Substance ID 24277862

  •  NACRES NA.77



Related Categories Additional Standards, Agonists, Alkaloids, Analytical Standards, Analytical/Chromatography,
Quality Level   100
assay   ≥99% (titration)
form   powder
application(s)   HPLC: suitable
  gas chromatography (GC): suitable
color   white
mp   202-205 °C (lit.)
solubility   H2O: 100 mg/mL
Featured Industry   Forensics and Toxicology
relevant disease(s)   epilepsy
SMILES string   Cl.CC[C@H]1[C@H](COC1=O)Cc2cncn2C
InChI   1S/C11H16N2O2.ClH/c1-3-10-8(6-15-11(10)14)4-9-5-12-7-13(9)2;/h5,7-8,10H,3-4,6H2,1-2H3;1H/t8-,10-;/m0./s1
Gene Information   human ... CHRM1(1128), CHRM2(1129), CHRM3(1131), CHRM4(1132), CHRM5(1133)



Pilocarpine hydrochloride has been used to stimulate salivary secretions in mice. It has also been used to induce status epilepticus(SE) in rat.


5, 10, 50 g in poly bottle

Biochem/physiol Actions

Pilocarpine is alkaloid isolated from the shrub Pilocarpus species. It comprises imidazole ring and γ- lactone rings in its structure. It has cholinergic potential and it stimulates the parasympathetic system. Pilocarpine is also effective for treating glaucoma. It stimulates ciliary muscle contraction by binding to muscarinic M3 receptors. It is effective in treating corneal dryness in Sjogren′s syndrome. It is a secretagogue, which improves salivary secretions in Xerostomia or a dry mouth condition in Sjogren′s syndrome patients and in radiotherapy patients with head and neck carcinoma.

Nonselective muscarinic acetylcholine receptor agonist; used to produce an experimental model of epilepsy.

Features and Benefits

This compound is a featured product for ADME Tox and Neuroscience research. Discover more featured ADME Tox and Neuroscience products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

This compound is featured on the Acetylcholine Receptors (Muscarinic) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.


Hygroscopic, light sensitive

Other Notes

Shelf life of the powder is at least five years.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

GHS06  GHS06
Signal word 
Hazard statements 
Precautionary statements 
UN 1544PSN2 6.1 / PGII
WGK Germany 


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

Please Enter a Lot Number
Protocols & Articles


Discover Bioactive Small Molecules for ADME/Tox

A significant number of drugs that fail in clinical trials have been associated with safety issues, including unexpected drug-drug interactions (DDI) or lack of efficacy due to poor pharmacokinetics....
Keywords: Absorption, Bioactive small molecules, Clinical, Metabolism

Discover Bioactive Small Molecules for Neuroscience

The nervous system, comprised of the brain and spinal cord (central nervous system, or CNS) and network of nerves that connects the CNS to the rest of the body (peripheral nervous system, or PNS) is ...
Keywords: Bioactive small molecules, Central Nervous System, Diseases, Metabolism, Neurodegenerative Diseases, Neuroscience, Neurotransmission, Neurotransmitters

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?