(S)-Phenylglycinol Alternative For Organocatalyst Synthesis | CAS 56613-80-0
Stereochemical Equivalence Verification: CAS 56613-80-0 Versus Industry Reference 282693
When validating a chiral building block for asymmetric synthesis, confirming stereochemical equivalence is the primary step for R&D procurement. CAS 56613-80-0 corresponds to (S)-Phenylglycinol, a critical intermediate often cross-referenced against legacy catalog numbers such as 282693. In our quality assurance protocols, we verify the absolute configuration using chiral HPLC and polarimetry to ensure the material matches the required (S)-enantiomer specification. Deviations in stereochemistry can lead to significant reductions in enantioselectivity during downstream organocatalyst formation. Our verification process focuses on the specific rotation values and chiral purity rather than generic chemical identity, ensuring that the chiral building block performs identically in catalytic cycles involving enamine or iminium activation.
It is essential to note that while CAS numbers provide a unique identifier, manufacturing processes can introduce trace stereoisomers that affect performance. We prioritize batch-to-batch consistency in optical rotation to mitigate the risk of racemization during storage or reaction setup. This level of verification is crucial when substituting established supply lines with new global manufacturer sources for critical synthesis routes.
Technical Specifications and Purity Grades for (S)-Phenylglycinol Sourcing
NINGBO INNO PHARMCHEM CO.,LTD. supplies (S)-Phenylglycinol in varying grades tailored to the stage of development, from laboratory screening to pilot-plant scaling. The selection of the appropriate industrial purity grade depends on the sensitivity of the catalytic reaction to trace metals or moisture. For organocatalyst precursor applications, higher purity levels are generally required to prevent catalyst poisoning. The table below outlines the typical technical parameters across different supply grades.
| Parameter | Lab Scale Grade | Pilot Plant Grade | Commercial Production Grade |
|---|---|---|---|
| Purity (GC/HPLC) | >98.5% | >98.0% | >97.5% |
| Enantiomeric Excess (ee) | >99.0% | >98.5% | >98.0% |
| Water Content (KF) | <0.5% | <1.0% | <1.5% |
| Residual Solvents | Ph. Eur. Compliant | ICH Q3C Guideline | Customer Specified |
For specific numerical values regarding a particular lot, please refer to the batch-specific COA. The manufacturing process is controlled to minimize variability in these parameters, ensuring that the transition from lab to production does not require extensive re-optimization of reaction conditions.
Critical COA Parameters: Enantiomeric Excess and Optical Rotation Tolerances
The Certificate of Analysis (COA) for (S)-Phenylglycinol must be scrutinized for two critical parameters: Enantiomeric Excess (ee) and Specific Optical Rotation. While standard COAs report these values at face value, field experience indicates that optical rotation can be sensitive to solvent residues and ambient moisture absorption. In our technical assessments, we observe that prolonged exposure to humid environments can slightly alter the observed rotation due to the hygroscopic nature of the amino alcohol functionality. This is a non-standard parameter often overlooked in basic documentation but is vital for precise dosing in asymmetric catalysis.
When evaluating the high-purity (S)-Phenylglycinol for your process, ensure the optical rotation is measured in the same solvent and concentration as your intended reaction medium. Discrepancies here can indicate the presence of diastereomeric impurities or solvates that may interfere with the transition state geometry during catalysis. We recommend verifying these tolerances upon receipt to align with your internal quality standards.
Trace Impurity Profiles Impacting Asymmetric Induction Yields
Trace impurities in 2-Amino-2-phenylethanol derivatives can significantly impact asymmetric induction yields, particularly in sensitive organocatalytic transformations. Common impurities include regioisomers or unreacted starting materials from the synthesis route. In the context of morpholine-based organocatalysts, as discussed in recent literature regarding beta-amino acids, the presence of trace achiral amines can compete for the electrophile, reducing the effective concentration of the chiral catalyst. This competition lowers the overall enantioselectivity of the Michael addition or aldol reactions.
Our analysis focuses on identifying impurities that co-elute during standard purification but possess different nucleophilic profiles. For instance, trace amounts of the (R)-enantiomer, even below 1%, can disrupt the rigid transition states required for high stereoinduction. Additionally, residual halides from precursor steps can act as Lewis acids, inadvertently altering the reaction pathway. Understanding the Phenylglycinol impurity profile allows R&D teams to adjust catalyst loading or implement additional purification steps pre-reaction to maintain yield integrity.
Bulk Packaging Configurations and Lead Times for Pilot-Plant Scaling
Scaling from gram to kilogram quantities requires robust packaging solutions that maintain chemical integrity during transit. NINGBO INNO PHARMCHEM CO.,LTD. offers bulk packaging configurations suitable for pilot-plant operations, including 25kg fiber drums and 200L steel drums lined with polyethylene bags. For larger volumes, IBC totes are available upon request. The physical packaging is designed to prevent moisture ingress and physical damage, which is critical for maintaining the stability of the amino alcohol structure.
Lead times vary based on the grade and quantity required. Standard commercial grades typically have shorter lead times compared to custom-specified purity levels. We coordinate closely with logistics partners to ensure timely delivery while adhering to international shipping regulations for chemical intermediates. It is important to plan procurement cycles considering these lead times to avoid interruptions in your production schedule. Our team provides factual shipping methods and packaging details to ensure safe arrival without making regulatory or environmental guarantees.
Frequently Asked Questions
What is the typical lead time for bulk orders of CAS 56613-80-0?
Lead times depend on the specific grade and quantity required. Standard inventory items usually ship within 2-4 weeks, while custom synthesis batches may require 6-8 weeks. Please contact our sales team for a precise schedule based on your current demand.
Can you provide a sample for technical evaluation before bulk purchasing?
Yes, we offer sample quantities for R&D evaluation to ensure the material meets your specific process requirements. Samples are subject to availability and must be requested through our technical support channel.
What documentation is provided with each shipment?
Each shipment includes a batch-specific Certificate of Analysis (COA), Safety Data Sheet (SDS), and commercial invoice. Additional documentation can be provided upon request to meet your internal quality assurance protocols.
Is custom packaging available for specific production line requirements?
We can accommodate custom packaging requests such as specific drum linings or labeling requirements. Please discuss your specific needs with our logistics team to determine feasibility and any associated costs.
Sourcing and Technical Support
Securing a reliable supply of chiral intermediates is fundamental to maintaining efficiency in pharmaceutical and fine chemical synthesis. Our commitment is to provide consistent quality and technical transparency to support your development goals. We understand the critical nature of supply chain stability in R&D and production environments. Ready to optimize your supply chain? Reach out to our logistics team today for comprehensive specifications and tonnage availability.