Industrial Technical Guide: Synthetic Utility, Quality Parameters, and Primary Supply Dynamics of Cyclobutanone (CAS No. 1191-95-3) in Advanced Pharmaceutical Manufacturing

Introduction

Cyclobutanone (CAS No. 1191-95-3) is a high-value, highly strained carbocyclic ketone intermediate (C4H6O) engineered for advanced active pharmaceutical ingredient (API) synthesis, specialty chemical manufacturing, and agrochemical development. Defined by its rigid four-membered ring system and an electrophilic carbonyl carbon, this versatile synthon delivers a unique combination of thermodynamic ring strain (~26 kcal/mol) and selective reactivity.

For pharmaceutical procurement executives, process development chemists, and supply chain directors, securing commercial-grade Cyclobutanone requires a deep understanding of its reaction profiles, physical characteristics, safe handling protocols, and global manufacturing dynamics.

Chemical Structure, Reactivity, and Synthetic Value

The strategic importance of CAS No. 1191-95-3 in active pharmaceutical ingredient development stems directly from its specialized molecular geometry and chemical reactivity:

Incorporation of Rigid Carbocyclic Frameworks

In modern medicinal chemistry, replacing flexible open-chain aliphatic fragments with rigid, small carbocyclic rings is an established drug design strategy. Incorporating the four-membered cyclobutane framework provides targeted architectural advantages:

Conformational Restriction:

By locking specific side-chain orientations in 3D space, cyclobutane motifs maximize binding affinity with target-receptor pockets while reducing off-target interactions.

Metabolic Stabilization:

The strained carbocyclic core slows down oxidative degradation by cytochrome P450 enzymes, extending the systemic half-life of drug candidates.

Physicochemical Tuning:

Substituting cyclobutane rings into therapeutic candidates allows chemists to optimize lipophilicity (log P), aqueous solubility, and overall membrane permeability.

Broad Application Across Therapeutic Pipelines

Cyclobutanone derivatives serve as core structural building blocks across a broad spectrum of discovery and commercial drug production pipelines:

Central Nervous System (CNS) Agents:

Used as a precursor for rigid neurotransmitter analogues, centrally acting analgesics, and psychiatric drug candidates.

Oncology & Enzyme Inhibitors:

Serves as a key intermediate for building spirocyclic and fused bicyclic scaffolds found in targeted small-molecule cancer therapies.

Antiviral & Nucleoside Chemistry:

Deployed in photochemical cycloadditions and ring-construction routes to access modified nucleoside derivatives and antiviral scaffolds.

Key Synthetic Transformations

The electrophilic carbonyl center paired with inherent ring strain enables diverse high-yielding synthetic pathways under controlled process conditions:

Nucleophilic Additions:

Reacts efficiently with organometallic reagents (e.g., Grignard, organolithium) to form sterically hindered tertiary cyclobutanols without side-reaction pathways.

Reductive Amination:

Converts rapidly into primary and secondary aminocyclobutane derivatives for direct incorporation into peptide backbones or amide coupling steps.

Ring-Expansion & Photochemical Routes:

Undergoes Baeyer-Villiger oxidations, Schmidt reactions, or photochemical rearrangement routes to yield functionalized gamma-lactones, lactams, and spiroheterocycles that are synthetic nightmares to construct via open-chain precursors.

Physical Properties & Commercial Quality Release Standards

To ensure predictable performance in regulated, multi-step API manufacturing campaigns, commercial batches of Cyclobutanone must adhere to rigorous technical release criteria:

Logistics, Packaging, and Safe Handling Stewardship

Due to its volatile liquid profile, flammable classification, and sensitivity to moisture and oxygen, Cyclobutanone requires rigorous supply chain management and storage protocols:

Inert Packaging Systems:

Commercial product is packaged under an inert dry nitrogen blanket in light-shielded, corrosion-resistant steel drums or specialized stainless steel ISO tanks to prevent moisture absorption and oxidative degradation.

Storage Environment:

Maintained in cool, dry, explosion-proof hazardous material warehouses below 25 °C (or under refrigerated storage at 0-6 °C for extended shelf life), strictly segregated from strong bases, reducing agents, and mineral acids.

Global Dangerous Goods Compliance:

Fully classified under international dangerous goods transport regulations (Flammable Liquid, Class 3, UN 1224, Packing Group II/III) and shipped with complete Safety Data Sheets (SDS) and lot-specific Certificates of Analysis (CoA).

Primary Sourcing Advantages with EASTFINE

Securing multi-ton allocations for clinical supply and commercial drug manufacturing requires partnering with a vetted primary producer. EASTFINE provides global pharmaceutical developers with supply security, direct technical alignment, and integrated manufacturing capabilities:

Strategic Dual-Site Manufacturing (Dalian & Heze)

Single-site dependency creates supply chain vulnerability during regional environmental audits, routine facility maintenance, or localized operational disruptions. EASTFINE operates two primary production facilities located in Dalian and Heze:

Supply Chain Redundancy:

Provides continuous production capability with seamless fallback options to prevent project delays.

Flexible Volume Scaling:

Accommodates demand shifts from multi-kilogram pilot batches for clinical trials up to multi-ton commercial production runs.

Primary Producer Value & Process R&D Expertise

Supported by an internal chemical research team holding 19 invention patents and 8 utility model patents, EASTFINE focuses on route optimization, atom economy, and yield maximization. Sourcing directly from the primary manufacturer eliminates trading company markups while opening direct lines of communication with process development chemists.

Integrated Quality Systems & Regulatory Readiness

EASTFINE facilities operate under strict ISO 9001, ISO 14001, and ISO 45001 management frameworks. Every production batch undergoes full analytical verification (GC-MS, HPLC, Karl Fischer, and NMR). Complete lot traceability, archival sample retention, and comprehensive analytical documentation support global regulatory filings and customer facility audits.

Conclusion

Securing a consistent, high-purity supply of Cyclobutanone (CAS No. 1191-95-3) is critical for advancing complex small-molecule pipelines without campaign interruptions. By pairing dual-site manufacturing resilience with direct primary producer expertise, EASTFINE serves as a dependable chemical supply partner for the global life science and fine chemical industries.

Contact EASTFINE's commercial sales team to request evaluation samples, review technical dossiers, or reserve campaign volume allocations.