L-Malic acid-13C4

L-Malic acid-13C4 (CAS 150992-96-4) is a stable isotope-labeled form of L-malic acid in which all four carbon atoms are replaced with carbon-13; used primarily as an analytical reference standard and metabolic tracer.

Where is L-Malic acid-13C4 used?

• Pharmaceutical and bioanalytical research: internal standard for LC-MS/MS and GC-MS methods
• Biotechnology: metabolic flux analysis mapping carbon flow
• TCA cycle and related pathway tracking
• Food science: authentication of natural malic acid content and adulteration detection in fruit-based products
• Nutrition research: isotope tracer studies of malic acid absorption and metabolism in vivo
• It enables precise quantification and tracking of malic acid in complex biological and chemical matrices.

Good to know: The labeled standard improves accuracy when quantifying malic acid in drug formulations or biological fluids.

Commercial specifications

• High isotopic purity, commonly ≥99 atom % 13C
• Chemical purity specifications suited to reference standard applications
• Packaging designed for long-term stability under controlled storage conditions