常见问题(FAQs)

FAQs: 1,5-Bis(1,1-dimethylethyl) N-Lysyl-L-Glutamate Diester

1,5-Bis(1,1-dimethylethyl) N-((((1S)-5-amino-1-((1,1-dimethylethoxy)carbonyl)pentyl)amino)carbonyl)-L-glutamate is a protected dipeptide derivative featuring tert-butyl ester groups on the L-glutamate backbone and a free terminal amine on the lysine-derived side chain, making it a versatile building block for peptide synthesis and bioconjugation research.

Product Name
1,5-Bis(1,1-dimethylethyl) N-((((1S)-5-amino-1-((1,1-dimethylethoxy)carbonyl)pentyl)amino)carbonyl)-L-glutamate
SKU / Catalog Number
B1046896
Compound Class
Protected dipeptide building block with tert-butyl ester groups
Key Functional Groups
tert-Butyl esters (×2), urea/carbamate-type amide linkage, free primary amine
Stereochemistry
L-configuration at glutamate center; (1S) configuration at lysine-derived amino acid center
Supplier
Aladdin Scientific

What Is This Compound and What Is It Used For?

1,5-Bis(1,1-dimethylethyl) N-((((1S)-5-amino-1-((1,1-dimethylethoxy)carbonyl)pentyl)amino)carbonyl)-L-glutamate (Aladdin SKU: B1046896) is a synthetic, orthogonally protected dipeptide-type building block. The molecule combines an L-glutamate residue bearing two tert-butyl ester protecting groups with a lysine-derived fragment connected through a urea or carbamate-type carbonyl linkage. A free primary amine is retained at the terminal position of the lysine-derived chain, providing a reactive handle for further chemical elaboration.

This structural profile makes the compound useful as an intermediate or building block in peptide chemistry, combinatorial library synthesis, and bioconjugation workflows where selective deprotection of the tert-butyl esters under mild acidic conditions (e.g., trifluoroacetic acid) is required. Researchers in medicinal chemistry and chemical biology may employ such building blocks for the construction of peptidomimetics or bifunctional linkers.

How Should This Compound Be Stored and Handled?

As with most protected amino acid and dipeptide building blocks, proper storage is essential to maintain chemical integrity. General best-practice guidelines apply in the absence of specific stability data supplied with your lot:

  • Temperature: Store at 2–8 °C (refrigerator) or as indicated on the product label and Certificate of Analysis (CoA). For long-term archiving, storage at −20 °C under inert atmosphere is commonly recommended for sensitive protected amino acid derivatives.
  • Atmosphere: Protect from moisture and oxygen. Store under nitrogen or argon where possible, especially after the container has been opened.
  • Light: Keep away from direct light to prevent potential photodegradation.
  • Handling: Use standard personal protective equipment (gloves, lab coat, eye protection). Consult the Safety Data Sheet (SDS) for this product before use.

Always verify storage conditions against the CoA provided with your specific lot, as empirical stability data for the exact batch takes precedence over general guidance.

How Do I Verify Purity and Identity Upon Receipt?

Aladdin Scientific provides a Certificate of Analysis (CoA) with each shipment. The CoA documents the analytical characterization performed on the specific lot and typically includes:

  • Identity confirmation: Techniques such as NMR spectroscopy (¹H and/or ¹³C) and high-resolution mass spectrometry (HRMS or LC-MS) are standard for confirming the molecular structure of compounds such as B1046896.
  • Purity assessment: HPLC purity (area percent) is the most common metric reported for synthetic building blocks of this type.
  • Appearance: Visual description (e.g., white to off-white solid or oil).

If you require additional characterization data beyond what is provided on the CoA, or if your in-house analysis reveals a discrepancy, please contact Aladdin Scientific technical support promptly and retain the original packaging for reference. Independent verification by LC-MS or ¹H NMR in a deuterated solvent appropriate for this compound (e.g., CDCl₃ or DMSO-d₆) is recommended as a routine in-lab check.

Ordering, Availability, and Custom Quantities

B1046896 is listed in the Aladdin Scientific catalog. To place an order or inquire about availability:

  • Visit the Aladdin Scientific website and search by SKU B1046896 or by the IUPAC name to locate the product page with current stock status and pricing.
  • Standard pack sizes are shown on the product page. If your project requires a quantity not listed, contact Aladdin's sales team to discuss custom synthesis or bulk sourcing options.
  • For institutional or high-volume orders, procurement managers should contact Aladdin Scientific directly for volume pricing and lead-time information.

When placing your order, ensure the purchase order references the exact SKU (B1046896) and the desired quantity and pack size to avoid fulfillment errors.

Frequently asked questions

What is the molecular structure of B1046896 and how do the tert-butyl ester groups affect reactivity?

B1046896 contains two tert-butyl ester (tBu) protecting groups on the L-glutamate alpha- and gamma-carboxylates, shielding them from unwanted reactions during synthetic steps. These groups are selectively removable under acidic conditions—typically dilute trifluoroacetic acid (TFA) in dichloromethane—without affecting most other functional groups, making the compound well-suited for Boc/tBu orthogonal protection strategies. The free terminal amine on the lysine-derived fragment remains available for acylation, reductive amination, or other coupling reactions.

Is B1046896 suitable for solid-phase peptide synthesis (SPPS)?

As a protected dipeptide building block with free amine and masked carboxylates, B1046896 may serve as a synthon in solution-phase peptide assembly or as a pre-formed dipeptide unit to be incorporated into longer sequences. Its compatibility with standard SPPS resins and coupling reagents should be verified empirically, as steric factors around the quaternary tert-butyl groups and the urea linkage may influence coupling efficiency. Researchers are advised to run small-scale test couplings before committing to full-scale synthesis.

What solvents are recommended for dissolving B1046896?

Protected amino acid and dipeptide building blocks of this class are typically soluble in polar aprotic solvents such as dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), and dichloromethane (DCM). Solubility in water is generally limited due to the hydrophobic tert-butyl groups. The optimal solvent should be selected based on the intended reaction conditions and compatibility with downstream coupling reagents. Always prepare a small-scale solubility test before preparing large stock solutions.

How should I cite this product in a publication or research report?

When reporting experiments using B1046896, include the full IUPAC name, the Aladdin Scientific catalog number (B1046896), and the lot number from your Certificate of Analysis. Stating the supplier (Aladdin Scientific) and country of manufacture as indicated on the CoA is standard practice for reproducibility. Check your target journal's guidelines for reagent reporting requirements.

What should I do if I receive a damaged shipment or the product does not meet specifications?

Contact Aladdin Scientific customer service as soon as possible upon identifying any issue, retaining all original packaging, labels, and the Certificate of Analysis. Provide your order number, SKU (B1046896), lot number, and a clear description of the discrepancy or damage. Aladdin Scientific's returns and refunds policy governs resolution options, which may include replacement or credit. Do not attempt to use suspect material in experiments until the issue is resolved.

References

  1. General reference: Bodanszky, M.; Bodanszky, A. The Practice of Peptide Synthesis, 2nd ed.; Springer: Berlin, 1994. (Textbook-level reference for protected amino acid building block chemistry.)
  2. Greene, T. W.; Wuts, P. G. M. Protective Groups in Organic Synthesis, 4th ed.; Wiley-Interscience: New York, 2007. (Reference for tert-butyl ester protection and deprotection strategies.)
  3. Aladdin Scientific. Certificate of Analysis for B1046896, Lot-specific document. Aladdin Scientific, Shanghai.

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.

目录: 常见问题(FAQs)

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产品仅供科研与开发使用,不用于人体、动物、诊断或治疗。

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阿拉丁科学.《FAQs: 1,5-Bis(1,1-dimethylethyl) N-Lysyl-L-Glutamate Diester》. 阿拉丁知识库,更新于 2026年10月21日。 https://www.aladdin-e.com/zh_cn/faqs/faq-1-5-bis-dimethylethyl-n-lysyl-l-glutamate-diester-b1046896-en.html
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