Description

Serine, n-Carboxy-, Dl-, n-Et Ester (5Ci) is a specialized, isotopically labeled derivative of serine, a fundamental amino acid. This compound is of significant value for research and development, particularly in analytical chemistry and metabolic studies, due to its stable carbon-13 (13C) isotope labeling. It is primarily utilized by scientists and manufacturers in the pharmaceutical, biotechnology, and agrochemical sectors for applications requiring precise molecular tracing and advanced spectroscopic analysis.

Application

• Isotope-Labeled Internal Standard for quantitative mass spectrometry (MS) and liquid chromatography-mass spectrometry (LC-MS) in bioanalytical research.
• Metabolic Pathway Tracer in biochemical and pharmacological studies to investigate amino acid metabolism and drug interactions.
• Advanced Organic Synthesis Intermediate for the preparation of complex, labeled peptides or other bioactive molecules.
• Nuclear Magnetic Resonance (NMR) Spectroscopy studies, where the 13C label provides a distinct signal for structural elucidation and dynamic analysis.
• Proteomics and Metabolomics Research, enabling accurate quantification and tracking of serine-containing compounds in complex biological samples.

Basic Information

Product Name	Serine, n-Carboxy-, Dl-, n-Et Ester (5Ci)
CAS No.	879278-92-9
Molecular Formula	C6H11NO5 (13C5)
Molecular Weight	177.12 g/mol (for 13C5 labeled form)
Synonyms	DL-Serine, N-Carboxy-, N-Ethyl Ester (5-13C); Ethyl N-Carboxy-DL-serinate (13C5); (5-13C)-DL-Serine, N-carboxy-, ethyl ester; N-Carboxy-DL-serine Ethyl Ester-13C5; Ethyl 2-((13C)carboxy)amino-3-hydroxypropanoate-13C4; 13C5-Labeled Serine NCA Ethyl Ester; Isotopically Labeled Serine Derivative
EINECS	Contact for details

Quality Control

Every batch of Serine, n-Carboxy-, Dl-, n-Et Ester (5Ci) is produced and tested to meet the stringent requirements of research-grade isotopically labeled compounds. Our quality assurance includes verification of isotopic enrichment, chemical purity, and structural identity. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing specifications such as isotopic purity (atom % 13C), chemical purity by HPLC, and NMR confirmation.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store at -20°C or below under an inert atmosphere. The product is hygroscopic (moisture-sensitive); ensure the container is sealed in a dry environment after each use to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Isotopic Purity (Atom % 13C)	≥ 99%
Chemical Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Complies with ICH limits

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