Description

Poly-S-Benzyl-L-Cysteine Mol Wt*2000-100 00 is a synthetic polypeptide derivative of the amino acid cysteine, where the thiol group is protected by a benzyl moiety. This engineered polymer is significant for its defined molecular weight range and its role as a key intermediate or building block in advanced biomaterial and pharmaceutical research. It is primarily needed by R&D scientists and process developers in the pharmaceutical, biotechnology, and specialty chemical sectors for applications requiring precise, functionalized polymeric structures.

Application

• Pharmaceutical Intermediate: Serves as a protected precursor in the solid-phase synthesis of complex peptides and peptide-based drug candidates.
• Biomaterial Research: Used in the development of functional hydrogels, drug delivery vehicles, and scaffolds for tissue engineering due to its reactive side chain potential.
• Conjugate Chemistry: Acts as a polymeric backbone or linker for creating antibody-drug conjugates (ADCs) or polymer-drug conjugates.
• Catalyst and Ligand Support: Employed as a chiral support or ligand in asymmetric synthesis and catalysis.
• Reference Standard: Functions as a well-characterized molecular weight standard for gel permeation chromatography (GPC/SEC) in polymer analysis.
• Surface Modification: Utilized to create bioactive or functional coatings on medical devices and implants.

Basic Information

Product Name	Poly-S-Benzyl-L-Cysteine Mol Wt*2000-100 00
CAS No.	25988-62-9
Molecular Formula	(C10H11NO2S)n
Molecular Weight	~2000 g/mol (Average)
Synonyms	Poly(S-benzyl-L-cysteine); P(S-Bzl-L-Cys); Poly(S-benzylcysteine); L-Cysteine, S-benzyl-, homopolymer; Poly(benzyl L-cysteinate); Poly(Bzl-Cys); Benzyl-protected polycysteine; Poly(S-Bzl-Cys-OH); Polycysteine benzyl thioether
EINECS	Contact for details

Quality Control

Our Poly-S-Benzyl-L-Cysteine is produced under controlled conditions to ensure batch-to-batch consistency for research and development purposes. Quality is verified through a suite of analytical techniques including Gel Permeation Chromatography (GPC) for molecular weight distribution, NMR for structural confirmation, and HPLC for purity assessment. A comprehensive Certificate of Analysis (COA) detailing specific results is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C for long-term stability. The product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder or solid
Identification (IR)	Conforms to structure
Average Molecular Weight (GPC)	2000 g/mol (Target)
Molecular Weight Distribution (Đ)	< 1.5
Assay (HPLC)	≥ 95%
Moisture Content (KF)	≤ 2.0%
Residual Solvents (GC)	Complies with ICH guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.