1.09602

Methyl stearate

reference substance for gas-chromatography

• Synonym(s): Methyl stearate, Octadecanoic acid methyl ester
• Empirical Formula (Hill Notation): C₁₉H₃₈O₂
• CAS Number: 112-61-8
• Molecular Weight: 298.50
• MDL number: MFCD00009005
• UNSPSC Code: 12352108
• EC Index Number: 203-990-4
• NACRES: NA.24

Properties

• Quality Level: 100
• form: solid
• bp: 215 °C/20 hPa
• mp: 37-39 °C
• density: 0.85 g/cm³ at 40 °C
• storage temp.: no temp limit
• InChI: 1S/C19H38O2/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19(20)21-2/h3-18H2,1-2H3
• InChI key: HPEUJPJOZXNMSJ-UHFFFAOYSA-N

Description

Application

• Forensic detection of N-Desmethylflunitrazepam: A method for detecting 92 analytes in oral fluid using LC-MS/MS, including N-Desmethylflunitrazepam, has been established, enhancing forensic toxicology practices (Desharnais et al., 2020).


• Quantitative analysis of benzodiazepine metabolites: Rapid determination of benzodiazepines and metabolites including N-Desmethylflunitrazepam in urine via direct injection LC-MS/MS, crucial for clinical and forensic investigations (Jeong et al., 2015).


• Optimizing chromatographic methods for benzodiazepines: Evaluation of high pH mobile phases in UHPLC-MS/MS for analyzing benzodiazepines and metabolites, such as N-Desmethylflunitrazepam, to improve detection in biological samples (Verplaetse et al., 2012).

Analysis Note

Purity (GC): ≥ 99.0
Identity (IR-spectrum): conforms

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): 230.0 °F - closed cup
• Flash Point(C): 110.0 °C - closed cup