Stable Isotopes

Custom Synthesis

ISOTEC has the most experienced team of stable isotope custom synthesis chemists in the industry, led by impressive group of Ph.D.'s, each one an expert in his field. ISOTEC routinely engages in the multiple step syntheses of complex labeled molecules including, metabolites and steroids. On-site production capabilities and an inventory of basic starting materials enable us to provide rapid synthesis of new compounds. We can deliver your custom synthesis compound faster than any other company in our industry.

We will synthesize quantities ranging from milligrams to kilograms, provide custom packaging services, and guarantee client confidentiality.


"Let us help you design your stable isotope labeled molecule!"  Please contact C.T. Tan PhD at:


Information & News

Our Synthesis Expertise Includes:

Alkylations Esterifications
Asymmetric Synthesis Frioedel-Crafts Acylations
Biosynthesis Alge, Bacteria Gas Phase Chemistry
Brominations & Iodinations Grignard Reactions
Carbohydrate Chemistry High Temperature & Pressure Reactions
Carbonylations High Purity Distillations (Gases & Solvents)
Catalytic Reductions (High & Low Pressure) Optical Resolutions
Diazotizations Oxidation Reactions
Deils-Adler Reactions Phosgenations
Enzymatic Reactions Pyrolysis

Our Team

  • Ph.D. Scientists
  • Chemical Engineers
  • Masters, Bachelors-Level Chemists, and Technicians
  • Teams dedicated to custom synthesis
  • Teams dedicated to biochemistry and biosynthetic reactions
  • Individual technical support
  • Dedicated customer service & sales representatives


Scale & Capacity

Our Laboratory Houses:
  • Up to 50 liter glass reactors
  • Up to 20 liter rotary evaporators
  • 0.5, 1, 5 and 10 gallon high pressure reaction vessels up to 5000 psi
  • 20, 50 and 72 liter fractional distillation stills
ISOTEC uses controls throughout all production processes to minimize variation and ensure superior product QUALITY, the highest RELIABILITY and highest CONSISTENCY. Our analytical laboratory is equipped with a wide array of instrumentation and techniques including:
  • High-Field NMR
  • Mass Spectrometers
  • Gas Chroatography
  • UV/VIS
  • Karl Fischer
  • GC/MS
  • Gas Moisture
  • Ion Chromotography
  • pH-Conductivity
  • FTIR
  • HPLCs
Our synthesis team is comprised of an impressive group of experienced professionals who have performed thousands of custom synthesis projects including:
  •  Pharmaceutical Intermediates
  • Biologically Active Molecules
  • Isotopically Labeled Reference Standards
  • Controlled Drug Standards (DEA)
  • NMR Reference Standards
  • Metabolites

Isotec's Analytical Capabilities Include:

  •  Multi-thousand Products' Analysis
  • Method Development
  • Method Validation
  • Qualitative/Quantitative Determination
  •  In-Process Controls
  • Reference Standard Analysis
  • Gas Analysis