541-20-8

Basic information

• Product Name: PENTAMETHONIUM BROMIDE
• Synonyms: PENTAMETHONIUM BROMIDE;5-pentanediaminium,n,n,n,n’,n’,n’-hexamethyl-dibromide;lytensium;pentamethoniumdibromide;pentamethylenebis(trimethyl-ammoniudibromide;Pentamethoniulm;Penthonium;.alpha.,.Omega.-bis(trimethylammonium)pentane dibromide
• CAS NO: 541-20-8
• Molecular Formula: 2Br*C₁₁H₂₈N₂
• Molecular Weight: 348.16
• EINECS: 208-771-7
• Mol File: 541-20-8.mol

Chemical Properties

• Melting Point: 301°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.3953 (rough estimate)
• Refractive Index: 1.6800 (estimate)
• CAS DataBase Reference: PENTAMETHONIUM BROMIDE(CAS DataBase Reference)
• NIST Chemistry Reference: PENTAMETHONIUM BROMIDE(541-20-8)
• EPA Substance Registry System: PENTAMETHONIUM BROMIDE(541-20-8)

Safety Data

• Hazardous Substances Data: 541-20-8(Hazardous Substances Data)

Usage

Uses

Used in Pharmaceutical Industry:
Pentamethonium bromide is used as an antihypertensive agent for the treatment of hypertension, particularly in hypertensive crisis or emergency situations, due to its ability to induce smooth muscle relaxation and vasodilation.
Used in Emergency Medicine:
In emergency medicine, pentamethonium bromide is used as a short-acting medication to rapidly lower blood pressure in cases of hypertensive emergencies, providing quick relief and management of severe hypertension.
Although pentamethonium bromide has been largely replaced by more effective medications for the routine treatment of hypertension, its niche applications in certain clinical situations highlight its continued relevance in specific contexts. Its safety and tolerability make it a viable option when appropriate.

InChI:InChI=1/C11H28N2.2BrH/c1-12(2,3)10-8-7-9-11-13(4,5)6;;/h7-11H2,1-6H3;2*1H/q+2;;/p-2

Upstream product

• 111-24-0 1,5-dibromo-pentane 
• 75-50-3 trimethylamine 
• 15008-33-0 (5-bromopentyl)trimethylammonium bromide 

Downstream Products

• 504-60-9 penta-1,3-diene 
• 1001-91-8 N,N-dimethylpent-4-enylamine 
• 75-50-3 trimethylamine 

Relevant articles and documents

Hydrogen bonding. Part 63. IR study of hydration of dimethonium and pentamethonium halides and NMR study of conformation of pentamethonium ion in solution

We have investigated hydrate formation by dimethonium and pentamethonium - (CH3)3N+-(CH2)n-+N(CH3)3 where n = 2 and 5 - bromide, chloride, and fluoride.Dimethonium bromide forms a dihydrate which contains a C2h(H2O*Br-)2 planar cluster.Dimethonium chloride forms a hypobarogenic dihydrate which is crystalline at reduced pressure but disproportionates to anhydrous material and liquid hexahydrate.Dimethonium fluoride forms three hydrates, a hexahydrate, tetrahydrate, and dihydrate.These hydrates, which represent fluoride ion trihydrate, dihydrate, and monohydrate respectively, have water-fluoride structures similar to those observed for a variety of other quaternary ammonium fluoride hydrates of corresponding stoichiometry; the dihydrate contains C2h(H2O*F-)2 clusters.Pentamethonium bromide and chloride form crystalline dihydrates (halide ion monohydrates) which do not contain planar (H2O*X-)2 clusters.Pentamethonium fluoride forms a trihydrate with unknown structure and, unlike other quaternary ammonium fluorides, does not form a fluoride ion monohydrate with (H2O*F-)2 clusters.The fact that the odd-numbered pentamethonium ion (C2v) fails to form halide dihydrates with planar (H2O*X-)2 clusters while the even-numbered dimethonium, hexamethonium, and decamethonium ions (C2h) all do may be a function of ion symmetry; however, further studies are required to clarify this point.FT-NMR study of the pentamethonium ion in aqueous solution and molecular modeling shows that rotation about the C1-C2 and C4-C5 ?-bonds is not possible, while rotation about the C2-C3 or C3-C4 bonds does take place.

Preparation method of biquaternary ammonium salt compound

The invention belongs to the field of chemistry, and provides a preparation method of a biquaternary ammonium salt compound. The preparation method comprises the following steps: by taking dibromoalkane and a trimethylamine aqueous solution as raw materials and ethanol as a solvent, reacting in a homogeneous system at 25-80 DEG C for 4-48 hours, and after the reaction is finished, distilling and washing to obtain a pure product. The reaction is simple and efficient, the cost is low, and the use of trimethylamine gas and other high-safety-risk raw materials and trimethylamine methanol solution and other high-economic-cost raw materials can be avoided in the preparation process; the defects of heterogeneous reaction and low conversion rate caused by independently using a trimethylamine aqueous solution and dibromoalkane as reaction raw materials are overcome; high-risk organic solvents such as diethyl ether are not used in the post-treatment process, and all the used organic solvents can be recycled.

Imine macrocycle with a deep cavity: Guest-selected formation of syn/anti configuration and guest-controlled reconfiguration

A dynamic covalent bond is one of the ideal linkages for the construction of large and robust organic architectures. In the present article, we show how organic templates can efficiently transform a complex dynamic imine library into a dynamic imine macrocycle. Not only is the constitution well controlled, but also the syn/anti host configuration is efficiently selected and even the orientation of the guest in the asymmetric cavity of the host can be well aligned. This is attributed to the delicate balance and the cooperation of multiple noncovalent interactions between the hosts and the guests. Through sequential additions of three guests in appropriate amounts, controlled structural reconfiguration of dynamic covalent architectures has been achieved for the first time.

Ion channel topography of the neuronal nicotinic acetylcholine receptor: Pharmacochemical approaches

Forty-three bisammonium ganglionic blockers were synthesized to study the structure of the ion channel of nicotinic acetylcholine receptor. The conformational parameters of these blockers were studied, and their effects toward the ganglionic transmission in situ on the sympathetic feline superior cervical ganglia and in vitro on the parasympathetic guinea-pig small intestine ganglia were determined. A model of the binding site for the bisammonium ganglionic blockers in the neuronal ion channel was proposed.