Description

C21 Ring-C Monoaromatic Sterane (5Alpha(H),10Beta(Ch3)/5Beta(H),10Beta(Ch3)) is a high-purity, structurally defined monoaromatic sterane compound, a key biomarker and reference standard in geochemical and environmental analysis. Its precise stereochemistry makes it an invaluable tool for researchers requiring accurate identification and quantification of sterane distributions. This compound is essential for laboratories in the petroleum geochemistry, environmental forensics, and advanced organic geochemistry sectors. It serves as a critical standard for calibrating analytical instruments and interpreting complex hydrocarbon mixtures.

Application

• Geochemical Biomarker Analysis: Used as a reference standard for identifying and quantifying steranes in crude oils and source rock extracts to assess thermal maturity, depositional environment, and oil-source correlations.
• Petroleum Exploration & Characterization: Critical for fingerprinting oils and understanding basin history, aiding in exploration strategy and reservoir evaluation.
• Environmental Forensics: Employed in tracing the source and weathering of petroleum hydrocarbon spills and contaminants in soil and water.
• Organic Geochemistry Research: Serves as a key analytical standard in academic and industrial research studying diagenetic and catagenetic pathways of steroids in sedimentary organic matter.
• Analytical Method Development & Validation: Used to develop, optimize, and validate Gas Chromatography-Mass Spectrometry (GC-MS) and GC-MS/MS methods for sterane analysis.
• Quality Control for Reference Material Producers: Acts as a high-purity starting material or calibration standard for companies producing certified reference materials (CRMs) for the oil and gas industry.

Basic Information

Product Name	C21 Ring-C Monoaromatic Sterane (5Alpha(H),10Beta(Ch3)/5Beta(H),10Beta(Ch3))
CAS No.	98774-61-9
Molecular Formula	C21H30
Molecular Weight	282.47 g/mol
Synonyms	5α(H),10β(CH3)-C21 Monoaromatic Sterane; 5β(H),10β(CH3)-C21 Monoaromatic Sterane; C21 MA Sterane; 13β(H),17α(H)-Diacholestane (8,9-seco); 5α-Androstane, 13β-ethyl-13,17-seco-; 5β-Androstane, 13β-ethyl-13,17-seco-; Monoaromatic C21 Steroid Hydrocarbon; Ring-C Monoaromatic Sterane Biomarker
EINECS	Contact for details

Quality Control

Our C21 Ring-C Monoaromatic Sterane is produced and handled under strict quality protocols to ensure the identity, purity, and stability required for precise analytical work. Each batch is characterized using advanced analytical techniques including GC-MS, NMR, and HPLC to confirm structural integrity and purity. A comprehensive Certificate of Analysis (COA) detailing batch-specific results is provided with every shipment. Our quality system supports traceability and meets the rigorous demands of research and industrial reference standards.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry, cool place. For long-term storage, consider storing under an inert atmosphere to prevent potential oxidation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to reference spectrum
Identification (GC-MS)	Conforms to reference
Purity (GC)	≥ 95.0% (Area %)
Purity (HPLC)	≥ 95.0% (Area %)
Related Substances (GC)	Total impurities ≤ 5.0%
Solubility	Soluble in common organic solvents (e.g., hexane, dichloromethane)

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