Description

Cystatin C, n-Terminal Octapeptide is a synthetic peptide fragment corresponding to the first eight amino acids of the human Cystatin C protein. This compound serves as a critical reference standard and research tool for the development and validation of diagnostic immunoassays targeting Cystatin C, a key biomarker for renal function. It is essential for researchers and manufacturers in the in-vitro diagnostics (IVD), pharmaceutical R&D, and clinical biochemistry sectors who require high-purity, well-characterized peptides for assay calibration and quality control.

Application

• Primary Reference Standard for the calibration of Cystatin C immunoassays (e.g., ELISA, CLIA, nephelometric assays).
• Critical Reagent in the development and validation of new diagnostic kits for assessing glomerular filtration rate (GFR).
• Quality Control Material for batch-to-batch consistency testing in diagnostic manufacturing.
• Research Tool in biochemical studies investigating the structure, function, and metabolism of Cystatin C.
• Antigen for the production and screening of specific antibodies against the n-terminal region of Cystatin C.
• Spiking Agent in method development and recovery studies using human serum or plasma matrices.

Basic Information

Product Name	Cystatin C, n-Terminal Octapeptide
CAS No.	132512-75-5
Molecular Formula	C38H61N11O12S
Molecular Weight	888.03 g/mol
Synonyms	Cystatin C (1-8); Human Cystatin C Fragment 1-8; Cystatin C N-terminal peptide; H-Ser-Pro-Pro-Arg-Leu-Val-Gly-Pro-OH; SCYS_HUMAN (1-8); Ser-Pro-Pro-Arg-Leu-Val-Gly-Pro; Cystatin C octapeptide
EINECS	Contact for details

Quality Control

Every batch of Cystatin C, n-Terminal Octapeptide is manufactured under controlled conditions and subjected to rigorous analytical testing to ensure identity, purity, and consistency. Our quality system is designed to meet the exacting requirements of diagnostic and research applications. A comprehensive Certificate of Analysis (COA) detailing purity (by HPLC), peptide content, and structural confirmation data is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below. This product is hygroscopic (moisture-sensitive). Allow the vial to equilibrate to room temperature in a desiccator before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (MS)	Conforms to theoretical mass
Purity (HPLC)	≥ 95.0%
Peptide Content	≥ 80.0% (by amino acid analysis)
Water Content (KF)	≤ 5.0%
Solubility	Soluble in water, dilute acetic acid

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