Description

Hcg-Beta (123-145) CAS NO 66053-67-6 is a synthetic peptide fragment corresponding to a specific region of the β-subunit of human chorionic gonadotropin (hCG). This high-purity peptide is a critical reference standard and research tool for the development and validation of immunoassays and diagnostic tests. It is primarily utilized by pharmaceutical R&D teams, diagnostic manufacturers, and academic research institutions focused on reproductive health, oncology, and biomarker discovery.

Application

• Immunoassay Development & Calibration: Serves as a precise antigen for developing and calibrating ELISA, RIA, and other immunoassays targeting hCG.
• Diagnostic Kit Manufacturing: Used as a key raw material and reference standard in the production of pregnancy and tumor marker test kits.
• Antibody Production & Characterization: Acts as an immunogen for generating monoclonal and polyclonal antibodies specific to the hCG β-subunit.
• Biomedical Research: Enables studies on hCG structure, function, and its role in pregnancy, trophoblastic diseases, and certain cancers.
• Quality Control (QC) in Pharma: Employed as a system suitability standard in QC laboratories for biopharmaceuticals related to fertility treatments.
• Academic & Clinical Studies: Supports fundamental research in endocrinology and clinical investigations into hCG-related disorders.

Basic Information

Product Name	Hcg-Beta (123-145)
CAS No.	66053-67-6
Molecular Formula	C112H179N35O39
Molecular Weight	2608.9 g/mol
Synonyms	hCG Beta Subunit Fragment (123-145); hCG-β (123-145); Chorionic Gonadotropin Beta Chain (123-145); Human Chorionic Gonadotropin Beta Peptide (123-145); β-hCG (123-145); CG-beta (123-145); hCG Beta Core Fragment (123-145); Pregnancy Hormone Beta Peptide Fragment
EINECS	Contact for details

Quality Control

Our Hcg-Beta (123-145) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, mass spectrometry (MS) for identity confirmation, and amino acid analysis (AAA). We provide full traceability and Certificates of Analysis (COA) are available for every shipment, ensuring compliance with research and diagnostic-grade specifications.

Storage

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

Specification

Item	Specification
Appearance	White to off-white lyophilized powder
Identification (HPLC & MS)	Conforms to reference standard
Purity (HPLC)	≥ 95%
Amino Acid Composition	Within ±10% of theoretical
Peptide Content	≥ 80% (by AAA)
Water Content (KF)	≤ 5.0%
Solubility	Soluble in water or dilute acetic acid

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