Description

Hemoglobin Questembert is a high-purity, specialized form of hemoglobin, a vital oxygen-transporting protein. This product is critical for research and development in life sciences, where consistent quality and biological activity are paramount. It serves as an essential reagent for biopharmaceutical companies, diagnostic manufacturers, and advanced academic research institutions focused on hematology, oxygen therapeutics, and biochemical assays.

Application

• Biopharmaceutical Research: Used as a reference standard and key component in the development of oxygen-carrying blood substitutes and novel therapeutic agents.
• Diagnostic Manufacturing: Serves as a critical raw material in the calibration and production of in-vitro diagnostic (IVD) kits and clinical chemistry controls for blood analysis.
• Biochemical & Cell Culture Studies: Employed in research applications to study oxygen metabolism, cellular respiration, and as an additive in specialized cell culture media.
• Academic & Industrial R&D: Provides a reliable protein source for fundamental research in biochemistry, physiology, and material science applications.
• Quality Control Laboratories: Acts as a known standard for method validation and quality assurance testing within pharmaceutical and diagnostic industries.

Basic Information

Product Name	Hemoglobin Questembert
CAS No.	152652-72-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Hemoglobin (Bovine); Questembert Hemoglobin; Oxyhemoglobin; Methemoglobin; Hb; Blood Hemoglobin; Erythrocruorin (related); Ferroheme Protein
EINECS	Contact for details

Quality Control

Hemoglobin Questembert is manufactured and controlled under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and biological functionality. A detailed Certificate of Analysis (COA), providing batch-specific results for key parameters such as assay, spectral purity, and microbiological limits, is supplied with every order to support your regulatory and quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C. This product is hygroscopic (moisture-sensitive) and must be kept under controlled humidity conditions. For long-term stability, consider storage at -20°C under desiccant.

Specification

Item	Specification
Appearance	Dark red to brown powder or lyophilized solid
Identification (IR)	Conforms to standard
Assay (Hemoglobin Content)	≥ 95% (by weight)
Purity (HPLC)	≥ 98.0%
Methemoglobin Content	≤ 2.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Biological Activity (O2 Binding)	Conforms to reference
Endotoxin	< 1.0 EU/mg
Microbial Limits	Meets Ph. Eur. 2.6.12 / USP <61>

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