Isotopically Labeled and Unlabeled Reference Standards

 

Custom Synthesis Services

Submit a Sample for Chemical Analysis

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

n-butomidate HCl 1mg/ml

High purity n-butomidate Hydrochloride includes a comprehensive Certificate of Analysis and all supporting analytical data

3-Methylflephedrone HCl

High purity 3-Methylflephedrone hydrochloride includes a comprehensive Certificate of Analysis and all supporting analytical data

4F-3Me-PVP HCl

High purity 4-Fluoro-3-Methyl-alpha-PVP (4-Fluoro-3-methyl--pyrrolidinovalerophenone, 4F-3Me-PVP) hydrochloride includes a comprehensive Certificate of Analysis and all supporting analytical data

α -PVT HCl

High purity α-Pyrrolidinopentiothiophenone (α -PVT) hydrochloride includes a comprehensive Certificate of Analysis and all supporting analytical data

α -PBT HCl

High purity α-Pyrrolidinobutiothiophenone (α -PBT) hydrochloride includes a comprehensive Certificate of Analysis and all supporting analytical data

2-Thiothinone HCl

High purity 2-Thiothinone (2-(Methylamino)-1-(thiophen-2-yl)propan-1-one) hydrochloride includes a comprehensive Certificate of Analysis and all supporting analytical data

Dihydro-Ethylone-d5 HCl 1mg/ml

High purity Dihydro-Ethylone-d5 HCl (metabolite) solution includes a comprehensive Certificate of Analysis and all supporting analytical data

Doxercalciferol (1alpha-hydroxyvitamin D2)

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

PEPAP-d5 HCl (MCV 4527-d5)

High purity PEPAP labeled d5 HCl (MCV 4527-d5, 1-(2-Phenylethyl)-4-phenyl-4-acetoxypiperidine-d5 HCl, synthetic heroin) includes a comprehensive Certificate of Analysis and all supporting analytical data

URB602 1mg/ml

High purity URB602 (Cyclohexyl-(1,1'-biphenyl)-3-ylcarbamate) solution includes a comprehensive Certificate of Analysis and all supporting analytical data

Tramadol Hydrochloride Labeled d6

High purity Tramadol Hydrochloride Labeled d6 includes a comprehensive Certificate of Analysis and all supporting analytical data

PB-22 (QUPIC)

High purity PB-22 (QUPIC, Quinolin-8-yl 1-pentyl-1H-indole-3-carboxylate) includes a comprehensive Certificate of Analysis and all supporting analytical data