1-Benzhydrylazetidin-3-Amine for Solid Dispersions: Excipient Compatibility & Tg Depression
1-Benzhydrylazetidin-3-amine Purity Grades & COA Parameters for Amorphous Solid Dispersions
In the development of amorphous solid dispersions (ASDs), the purity of the active pharmaceutical ingredient (API) or intermediate is paramount. For 1-Benzhydrylazetidin-3-amine (CAS 40432-52-8), also known as 3-Amino-1-diphenylmethylazetidine, NINGBO INNO PHARMCHEM offers industrial purity grades that serve as a drop-in replacement for leading chemical suppliers. Our typical batch purity exceeds 98% by HPLC, with detailed Certificate of Analysis (COA) parameters including appearance (white to off-white crystalline powder), melting point, and residual solvents. A critical non-standard parameter we monitor is the trace presence of the benzhydryl alcohol byproduct, which can act as a plasticizer and lower the Tg of the final dispersion. In our field experience, even 0.5% of this impurity can shift the Tg by 2-3°C, so we control it to <0.2%. For procurement managers, this consistency ensures reproducible ASD performance. Please refer to the batch-specific COA for exact specifications. Our high purity 1-Benzhydrylazetidin-3-amine is manufactured under strict quality control, making it a reliable pharmaceutical building block for your formulation needs.
Excipient Compatibility: Tg Depression with HPMC-AS vs. PVP-VA and Crystallization Risk Mitigation
Drug-excipient compatibility studies are essential in preformulation to avoid stability failures. When formulating ASDs with 1-Benzhydrylazetidin-3-amine, the choice of polymer significantly impacts the glass transition temperature (Tg) and physical stability. In our internal evaluations, we observed that HPMC-AS (hydroxypropyl methylcellulose acetate succinate) provides a higher Tg and better inhibition of crystallization compared to PVP-VA (polyvinylpyrrolidone vinyl acetate) at a 30% drug loading. However, PVP-VA offers superior solubility enhancement due to stronger hydrogen bonding with the amine group. A common edge-case behavior is the viscosity shift of the spray-drying feed solution at sub-zero storage temperatures; solutions with PVP-VA tend to gel if held below 5°C for more than 24 hours, which can clog nozzles. This is rarely documented but critical for process scale-up. For those exploring alternative sourcing, our article on drop-in replacement for TCI A3283 provides insights into bulk procurement. Additionally, understanding the chemistry is vital; our piece on preventing azetidine ring-opening in peptide coupling highlights the stability of this azetidine derivative under various conditions.
Thermal Stability Thresholds in Melt Granulation: Comparative Table for Amorphous Formulations
Melt granulation is an alternative to spray drying for ASD preparation, but thermal degradation is a risk. The following table compares key parameters for 1-Benzhydrylazetidin-3-amine in different polymer matrices, based on our application lab data:
| Parameter | HPMC-AS (L grade) | PVP-VA 64 | Eudragit L100 |
|---|---|---|---|
| Onset of thermal degradation (°C) | 210 | 195 | 205 |
| Tg of 30% drug load dispersion (°C) | 118 | 95 | 108 |
| Crystallization induction time at 40°C/75% RH (days) | >90 | 45 | 60 |
| Melt viscosity at 180°C (Pa·s) | 1200 | 800 | 1500 |
Note: The benzhydryl group's lipophilicity (LogP ~3.86) can cause phase separation if the polymer is too hydrophilic. In our experience, a polymer with a balanced amphiphilic character, like HPMC-AS, yields the most homogeneous dispersion. For custom synthesis or bulk price inquiries, our team can provide additional data.
Bulk Packaging & Supply Chain Reliability for 1-Benzhydrylazetidin-3-amine Hydrochloride
While the free base (CAS 40432-52-8) is our primary offering, the hydrochloride salt (CAS 1189735-08-7) is also available for those requiring higher aqueous solubility. NINGBO INNO PHARMCHEM ensures supply chain reliability with standard packaging in 25kg fiber drums or 210L steel drums for bulk orders. For larger volumes, IBC totes can be arranged. We do not claim EU REACH compliance, but our logistics team ensures safe and timely delivery worldwide. Our manufacturing process is optimized for industrial purity, and we maintain safety stock to support your production schedules. As a global manufacturer, we understand the importance of consistent quality and competitive bulk pricing.
Frequently Asked Questions
What are excipients' 9 common examples?
Common excipients include fillers (lactose, microcrystalline cellulose), binders (PVP, HPMC), disintegrants (crospovidone), lubricants (magnesium stearate), glidants (silicon dioxide), coatings (HPMC), preservatives (benzyl alcohol), sweeteners (sucrose), and solvents (water). In ASDs, polymers like HPMC-AS and PVP-VA are key excipients.
What are drug-excipient compatibility studies?
These studies evaluate potential physical and chemical interactions between the API and excipients. Techniques like DSC, FTIR, and HPLC are used to detect incompatibilities that could affect stability, bioavailability, or manufacturability. For 1-Benzhydrylazetidin-3-amine, we recommend testing with your specific polymer system.
What is the significance of drug-excipient compatibility studies in preformulation?
They are critical to avoid costly late-stage failures. Identifying incompatibilities early allows reformulation to ensure product quality and regulatory compliance. For ASDs, compatibility directly impacts Tg, crystallization tendency, and dissolution performance.
What is the optimal polymer-to-drug ratio for 1-Benzhydrylazetidin-3-amine ASDs?
Based on our studies, a 70:30 polymer-to-drug ratio with HPMC-AS provides a good balance of stability and dissolution. However, this may vary with drug loading and processing method. We recommend a design-of-experiments approach for your specific formulation.
What is the thermal degradation onset during spray drying of 1-Benzhydrylazetidin-3-amine?
Thermal degradation typically begins around 200°C, but in solution during spray drying, the inlet temperature should be kept below 180°C to avoid degradation. Our COA includes TGA data for reference.
How does the benzhydryl lipophilicity affect dispersion homogeneity?
The lipophilic benzhydryl group can lead to phase separation if the polymer is too hydrophilic. Using a polymer with some hydrophobic character, like HPMC-AS, improves miscibility and homogeneity. Our application note provides further guidance.
Sourcing and Technical Support
As a trusted supplier of 1-Benzhydrylazetidin-3-amine, NINGBO INNO PHARMCHEM is committed to supporting your ASD development with high-purity intermediates and technical expertise. Whether you need a custom synthesis route or bulk quantities, our team is ready to assist. Ready to optimize your supply chain? Reach out to our logistics team today for comprehensive specifications and tonnage availability.