Isotopically Labeled and Unlabeled Reference Standards

 

Custom Synthesis Services

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Our core business is in the small-scale (milligram to gram) synthesis of pharmaceutical active organic compounds for research purposes and use as Certified Analytical Reference Standards. If you can draw it, we can probably synthesize it (at a price of course, that covers our R&D efforts!).

Stable Isotope Labeled (SIL) and Unlabeled Reference Standards

We specialize in small-scale synthesis of:

- APIs
- Metabolites
- Impurities
- Analogues
- Intermediates



With decades of combined experience, we are experts in the synthesis of stable labeled APIs and metabolites. Our extensive experience allows us to place deuteriums in the most stable positions to limit exchange, which ensures the quality of your assay. In cases where deuterium labeling is not desirable, we happily rely on 13C or 15N.

We are a registered DEA lab for Schedules I to V controlled compounds.

 

We have a large number of Anaytical Reference Standards available in stock for delivery. Please view our catalog of high-purity compounds and sealed solutions or request a quote for those listed and for custom-synthesis of those that are not listed in our catalog.

 

Full-time Equivalent (FTE) service is also available for R&D efforts, custom-synthesis of comounds with limited or no literature precedent requiring synthesis method development, or for primarily research oriented projects.

 

Quality Matters

Are you buying poorly characterized and unsupported reference standards? You don't need to settle for TLC or single wavelength purity determination.

With our full chemical certification, you will never need to doubt the authenticity or purity of Chemtos reference standards. Every compound provided by Chemtos comes fully certified with UV Diode Array HPLC purity analysis, proton NMR analysis, LC/MS and all of the supporting data. All analytical work is done under GLP conditions. Concentrations of our single use reference standard solutions in fame sealed ampules are verified by Quantitative proton NMR in order to independently confirm the stated potency/concentration value. See a sample Certificate of Analysis.

Learn more about the Chemtos Difference

Etodesnitazene (Etazene) 1mg/ml

High purity Etodesnitazene (Etazene) Citrate includes a comprehensive Certificate of Analysis and all supporting analytical data

5-Methyl Etodesnitazene 1mg/ml

High purity 5-Methyl Etodesnitazene Citrate includes a comprehensive Certificate of Analysis and all supporting analytical data

Metodesnitazene (Metazene) 1mg/ml

High purity Metodesnitazene (Metazene) Citrate includes a comprehensive Certificate of Analysis and all supporting analytical data

Methylenedioxynitazene 1mg/ml

High purity Methylenedioxynitazene Citrate includes a comprehensive Certificate of Analysis and all supporting analytical data

N-Pyrrolidino Isotonitazene 1mg/ml

High purity N-Pyrrolidino Isotonitazene Citrate includes a comprehensive Certificate of Analysis and all supporting analytical data

N-Pyrrolidino Protonitazene 1mg/ml

High purity N-Pyrrolidino Protonitazene Citrate includes a comprehensive Certificate of Analysis and all supporting analytical data

MDPV HCl 1mg/ml

High purity MDPV HCl (3,4-Methylenedioxypyrovalerone) solution includes a comprehensive Certificate of Analysis and all supporting analytical data

Cephalotaxine Labeled d5

High purity Cephalotaxine Labeled d5 includes a comprehensive Certificate of Analysis and all supporting analytical data

Mecloqualone

High purity Mecloqualone includes a comprehensive Certificate of Analysis and all supporting analytical data

(R)-1-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)ethanol (oil)

High purity (R)-1-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)ethanol (oil) includes a comprehensive Certificate of Analysis and all supporting analytical data

Indapyrophenidone HBr 1mg/ml

High purity Indapyrophenidone HBr (1-(2,3-Dihydro-1H-inden-5-yl)-2-phenyl-2-(pyrrolidin-1-yl)ethan-1-one, Indanyl-α-phenyl analogue of the stimulant drug α-PVP, PubChem CID 129844581, Chem Spider 58858896) solution includes a comprehensive Certificate of Analysis and all supporting analytical data

Nitrazepam-d5 0.1mg/ml

High purity Nitrazepam labeled-d5 (Dealkylprazepam-d5, Desmethyldiazepam-d5, Nordiazepam-d5, Norprazepam-d5) solution includes a comprehensive Certificate of Analysis and all supporting analytical data