Description

Premium U-47700 Powder: Industrial Grade Supply for Advanced Research Applications

 

U-47700 (trans-3,4-dichloro-N-[2-(dimethylamino)cyclohexyl]-N-methylbenzamide) represents a synthetic opioid compound originally developed by Upjohn Pharmaceuticals in the 1970s as part of a series of kappa-opioid receptor selective agonists. As a structural analog of AH-7921 with distinct pharmacological properties, U-47700 has emerged as a critical reference standard in forensic toxicology, opioid receptor pharmacology research, and novel psychoactive substance (NPS) monitoring programs. Biosynlab delivers pharmaceutical-grade U-47700 with certified ≥99.0% purity, supporting cutting-edge research across USA (DEA-licensed institutions), United Kingdom, European Union, and international forensic and scientific markets.

The unique trans-cyclohexyl-dimethylamino substitution pattern combined with the 3,4-dichloro substitution on the benzamide ring creates a potent μ-opioid receptor agonist with distinct structure-activity relationships compared to traditional morphinan opioids. This structural architecture has made U-47700 invaluable for comparative studies with other synthetic opioids including fentanyl, AH-7921, MT-45, and novel fentanyl analogs. Forensic laboratories in London, Berlin, Amsterdam, New York, and Los Angeles rely on Biosynlab U-47700 for quantitative analysis in post-mortem toxicology, driving under the influence investigations, and monitoring of the evolving synthetic opioid landscape.

Chemical Properties & Structural Characterization

U-47700 belongs to the benzamide chemical class, specifically the N-cyclohexyl-N-methylbenzamide subclass characterized by a diarylamide structure with cyclohexyl substitution and dichloro substitution on the aromatic ring.

Key Structural Features:

• Core Scaffold: N-methylbenzamide backbone
• Substitutions: 3,4-dichloro on benzene ring, trans-2-(dimethylamino)cyclohexyl on amide nitrogen
• Stereochemistry: Trans configuration of cyclohexyl substituents (critical for activity)
• Functional Groups: Tertiary amide, tertiary amine (dimethylamino), dichloroaromatic
• Salt Form: Hydrochloride (HCl) for enhanced stability and solubility
• Physical State: Crystalline powder (highly potent, handle with extreme care)

Analytical Characteristics:

• UV Absorption: 220 nm (strong), 280 nm (aromatic dichloro chromophore)
• Retention Time (HPLC): 8.4-9.2 minutes (C18 column, gradient method)
• Mass Spec m/z: 331.1/333.1 [M+H]+ (chlorine isotope pattern, 3:1 ratio), 274.1 [M+H-dimethylamine]+, 246.1 [M+H-cyclohexyl]+
• NMR Signatures: Cyclohexyl protons (1.2-2.8 ppm), N-methyl singlet (2.8-3.0 ppm), N,N-dimethyl singlet (2.2-2.4 ppm), aromatic protons (7.2-7.6 ppm, characteristic AB pattern)

Research Applications & Scientific Utility

Opioid Receptor Pharmacology:
U-47700 serves as a critical tool compound for investigating μ-opioid receptor (MOR) pharmacology. Research applications include:

• μ-Opioid receptor binding affinity determination (Ki ~5-10 nM, selective MOR agonist)
• Structure-activity relationship studies in benzamide opioids
• Comparison with fentanyl, morphine, AH-7921, and MT-45
• Receptor selectivity profiling (MOR vs. DOR vs. KOR)
• G-protein coupling and β-arrestin recruitment studies
• Bias agonism and signaling pathway investigations

Forensic Toxicology & Opioid Crisis Research:
Certified reference standard applications include:

• LC-MS/MS method development for ultra-low level detection (pg/mL)
• Post-mortem toxicology case work (overdose investigations)
• Differentiation of pharmaceutical vs. illicitly manufactured U-47700
• Novel fentanyl analog monitoring (acetylfentanyl, carfentanil, etc.)
• Driving under the influence (DUID) investigations
• Workplace drug testing assay validation (expanded panels)

Novel Psychoactive Substance (NPS) Research:

• Structure-activity relationships in designer opioids
• Potency comparisons and structure-toxicity relationships
• Detection method development for emerging analogs
• International drug surveillance and early warning systems
• Metabolite identification and profiling

Clinical Pharmacology Research:

• Opioid receptor pharmacology in pain management research
• Structure-potency relationships
• Addiction and dependence mechanism studies
• Respiratory depression liability assessment
• Comparison with prescription and illicit opioids

Analytical Chemistry:

• GC-MS method development (challenges due to thermal lability)
• LC-MS/MS validation for low-level detection
• Immunoassay cross-reactivity studies
• Isomeric separation (cis vs. trans isomers)
• Stability studies in various matrices

Synthesis & Quality Control Protocols

Biosynlab’s U-47700 production adheres to rigorous pharmaceutical-grade standards with extreme safety protocols:

Synthetic Route:

1. Starting Material: 3,4-Dichlorobenzoic acid or appropriate precursor
2. Activation: Formation of acid chloride or activated ester
3. Amide Formation: Reaction with trans-2-(dimethylamino)cyclohexylamine
4. N-Methylation: Methylation of amide nitrogen
5. Purification: Multi-step recrystallization and chromatography
6. Salt Formation: HCl salt preparation for optimal stability
7. Drying: Vacuum desiccation under inert atmosphere
8. Isomeric Purity: Verification of trans configuration

Analytical Verification:

• HPLC-PDA: Purity ≥99.0%, impurity profiling (cis-isomer, AH-7921, desmethyl) <0.5%
• ¹H NMR (400 MHz): Complete structural assignment, stereochemistry confirmation
• ¹³C NMR (100 MHz): Carbon environment verification
• 2D NMR (COSY, HSQC, HMBC): Correlation spectroscopy for structure proof
• LC-MS/MS: Molecular weight confirmation, fragmentation analysis
• FTIR-ATR: Amide carbonyl (1640-1680 cm⁻¹), C-Cl stretches (800-900 cm⁻¹)
• DSC: Melting point determination, thermal stability, polymorph screening
• TGA: Thermal gravimetric analysis
• Chiral HPLC: Verification of trans configuration, absence of cis-isomer
• Residual Solvent: GC-HS per ICH Q3C guidelines
• Heavy Metals: ICP-MS for Class 1 and 2 elements
• Water Content: Karl Fischer titration

Extreme Safety Considerations:

• Potency Warning: Active at microgram doses; lethal at milligram doses
• Dermal Absorption: Transdermal penetration risk; avoid skin contact
• Inhalation Risk: Extremely hazardous if powder becomes airborne
• Cross-Contamination: Rigorous cleaning protocols required

Batch Documentation:

• Certificate of Analysis (COA) with complete analytical data
• Material Safety Data Sheet (MSDS) with extreme hazard warnings
• DEA Form 222 documentation (USA)
• Stability testing data (accelerated and real-time)
• Chain of custody documentation

Packaging, Storage & Logistics

Primary Containment (Triple Containment):

• Inner: Sealed amber glass vial (5-20mL)
• Middle: PTFE-lined secondary container with absorbent
• Outer: Rigid impact-resistant container with tamper-evident seals
• Argon headspace to prevent oxidation
• Multiple indicating silica gel desiccant packets
• Emergency spill cleanup materials included

Secondary Packaging:

• Rigid protective containers with custom foam inserts
• Shock-absorbing packaging materials
• Plain unmarked cardboard exterior
• Temperature-controlled packaging with phase-change materials

Storage Specifications:

• Recommended: -20°C freezer, desiccated, inert atmosphere
• Short-term: 2-8°C refrigerator (<3 months)
• Ambient: Not recommended
• Stability: 12+ months at -20°C with proper handling
• Security: Vault storage with dual-lock, access logging

Handling Protocols:

• DEA Schedule I facility required (USA)
• Vault storage with appropriate security
• Comprehensive inventory tracking (weighed, perpetual)
• Fume hood mandatory for all handling
• NIOSH-approved respirator (P100 or equivalent)
• Nitrile gloves (double-gloving), face shield, lab coat
• Emergency naloxone (Narcan®) immediately available
• Emergency eyewash and safety shower access
• Spill containment kits with opioid-specific absorbents
• Buddy system – NEVER handle alone
• Proper hazardous waste disposal per DEA regulations

Global Distribution & Regional Availability

Biosynlab ships U-47700 only to appropriately licensed institutions:

United States (DEA Schedule I – Licensed Institutions Only):
DEA-registered forensic laboratories, CDC opioid surveillance programs, government research agencies with Schedule I licenses

United Kingdom (Home Office Licensed):
Forensic laboratories, licensed research institutions, Home Office-approved facilities

European Union (National Licenses):
Germany (BfArM), Netherlands (Opiumwet licensed), EMCDDA reference laboratories, licensed forensic facilities

Other Regions:
Canada (Health Canada licensed), Australia (TGA licensed), international forensic organizations

Shipping Specifications:

• Specialized controlled substance shipping (DEA Schedule I protocols USA)
• Chain of custody documentation at every step
• Signature confirmation and tracking mandatory
• Dual-lock packaging for transit
• Insurance coverage required
• Customs documentation for international shipments