LN731 Clonitrazolam: A Novel Thienotriazolodiazepine for Specialized Pharmacological Research

Product Name: Clonitrazolam (LN731)
Chemical Name: Not publicly disclosed under this designation
Common Designation: LN731
Molecular Class: Thienotriazolodiazepine
Appearance: Fine, crystalline powder (color may vary by batch)

Introduction: A Distinctive Triazolo Analog

LN731, commonly referred to in research circles as Clonitrazolam, represents a sophisticated addition to the class of thienotriazolodiazepine research chemicals. This novel compound is characterized by the strategic fusion of a thiophene ring—a hallmark of the thienodiazepine class—with the triazole ring system, a modification known to significantly alter the pharmacokinetic and pharmacodynamic profile of benzodiazepine analogs. As a chloro-substituted derivative, it is a subject of significant interest for researchers investigating the impact of specific molecular modifications on receptor binding affinity, metabolic stability, and functional activity in vitro.

This product is provided strictly as a high-purity chemical for use in non-human, in vitro research applications by qualified professionals.

Key Characteristics and Research Properties

• Triazolo Ring Modification: The core structure of Clonitrazolam features a triazole ring fused to the diazepine ring, a design associated with high potency and a unique metabolic pathway compared to traditional 1,4-benzodiazepines. This makes it an invaluable tool for Structure-Activity Relationship (SAR) studies.

• High Potency & Efficacy: Preliminary, non-clinical in vitro data suggests that Clonitrazolam exhibits very high binding affinity and efficacy as a positive allosteric modulator at the GABA-A receptor benzodiazepine site. Its high potency necessitates meticulous laboratory handling practices and the use of precision analytical equipment for measurement.

• Thienodiazepine Core: The substitution of the benzene ring with a thiophene ring defines it as a thienodiazepine. This alteration can influence the compound’s electronic distribution, lipid solubility, and ultimately, its interaction with the receptor binding pocket, a key area of biochemical research.

• Research Applications: Its primary utility lies in its application as a potent reference standard in assays designed to study the GABAergic system.

Intended Applications and Research Use

Clonitrazolam (LN731) is a chemical for controlled scientific investigation and is not for human or veterinary use.

Its primary applications include, but are not limited to:

• Neuropharmacological Studies: In vitro investigation of GABA-A receptor subunit selectivity, binding kinetics (Ki/IC50), and functional efficacy (EC50) on cloned human receptors.

• Metabolic Profiling: Analysis of phase I and phase II metabolic pathways using human liver microsome or hepatocyte models to identify characteristic metabolites for forensic purposes.

• Analytical Reference Standard: Serving as a high-purity calibrant for the development and validation of sensitive analytical methods (e.g., GC-MS, LC-MS/MS, HPLC-UV) for the detection and quantification of novel psychoactive substances (NPS) in forensic and clinical toxicology.

• Structure-Activity Relationship (SAR) Research: Comparative studies against other triazolobenzodiazepines (e.g., Etizolam, Flualprazolam) and classical benzodiazepines to map the critical structural features responsible for potency, selectivity, and metabolic stability.

Handling, Storage, and Safety Information

• Purity: >99% (as verified by High-Performance Liquid Chromatography (HPLC) and Nuclear Magnetic Resonance (NMR) spectroscopy).

• Solubility: Soluble in organic solvents such as dimethyl sulfoxide (DMSO), ethanol, and methanol. Limited solubility in water.

• Storage: Must be stored in its original container in a cool, dry, and dark environment, ideally between +2°C and +8°C. The container must be tightly sealed and protected from atmospheric moisture and light to prevent degradation and ensure long-term stability.

• Handling: EXTREME CAUTION. This is a high-potency material that demands professional handling. It must only be manipulated by trained researchers in a controlled laboratory setting. Strict safety protocols must be followed, including the use of personal protective equipment (PPE) such as nitrile gloves, a lab coat, and safety glasses. Handling of the pure powder must be conducted within a certified fume hood to prevent accidental inhalation or cross-contamination.