Description

Cytidine-13C9 CAS NO 202406-79-9 is a stable isotope-labeled nucleoside, where all nine carbon atoms are the non-radioactive carbon-13 isotope. This high-purity labeled compound is essential for advanced analytical research, providing a critical internal standard for precise quantification and metabolic pathway tracing. It is primarily required by pharmaceutical R&D laboratories, academic research institutions, and CROs (Contract Research Organizations) engaged in metabolomics, pharmacokinetic studies, and biomarker discovery.

Application

• Quantitative Mass Spectrometry (MS) & LC-MS/MS: Serves as an ideal internal standard for the accurate quantification of endogenous cytidine and related metabolites in complex biological matrices.
• Metabolic Flux Analysis (MFA): Used as a tracer to study the dynamics of nucleotide and nucleoside metabolism in cell cultures, tissues, and whole organisms.
• Drug Metabolism and Pharmacokinetics (DMPK): Enables precise tracking of the absorption, distribution, metabolism, and excretion (ADME) of nucleoside-based drug candidates.
• Clinical Diagnostics & Biomarker Research: Facilitates the development of highly sensitive and specific assays for detecting metabolic disorders related to pyrimidine metabolism.
• NMR Spectroscopy: Acts as a carbon-13 enriched substrate for nuclear magnetic resonance studies to elucidate molecular structures and dynamics.
• Proteomics & Genomics Research: Supports advanced studies in systems biology where precise measurement of nucleotide pools is critical.

Basic Information

Product Name	Cytidine-13C9
CAS No.	202406-79-9
Molecular Formula	C139H13N3O5
Molecular Weight	Contact for details
Synonyms	1-β-D-Ribofuranosylcytosine-13C9; 4-Amino-1-β-D-ribofuranosyl-2(1H)-pyrimidinone-13C9; Cytosine riboside-13C9; Cytosine-1-β-D-ribofuranoside-13C9; 13C9-Cytidine; [13C9]-Cytidine; U9-13C-Cytidine; Isotopically Labeled Cytidine
EINECS	Contact for details

Quality Control

Every batch of Cytidine-13C9 is manufactured and tested under strict quality management systems. We guarantee high chemical purity and isotopic enrichment, supported by comprehensive analytical data including HPLC, NMR, and Mass Spectrometry. A Certificate of Analysis (COA) detailing purity, isotopic purity (atom % 13C), and specific tests is provided with each shipment to ensure traceability and compliance with your research protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent degradation from atmospheric moisture. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (Atom % 13C)	≥ 99%
Water Content (KF)	≤ 1.0%
Residual Solvents (GC)	Complies with ICH guidelines

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