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Isotope Standards

Compounds (solids, liquids, gasses) with well-defined isotopic compositions that act as the ultimate sources of accuracy in mass spectrometric measurements of isotope ratios.
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211 – 225 of 338 results
211

eMolecules​ Medchem Express / Etoricoxib-d4 / 1mg / 446265458 / HY-15321S / / 1131345-14-6 / MFCD28900687 / 362.860 / C18H15ClN2O2S

Medchem Express / Etoricoxib-d4 / 1mg / 446265458 / HY-15321S / / 1131345-14-6 / MFCD28900687 / 362.860 / C18H15ClN2O2S

ENCOMPASS_PREFERRED
212

Sigma Aldrich Fine Chemicals Biosciences Praziquantel Related Compound C United States Pharmacopeia (USP) Reference Standard | 125273-88-3 | 50MG

Praziquantel Related Compound C United States Pharmacopeia (USP) Reference Standard | Mol Wt: 342.39 | 125273-88-3 | 50MG

ENCOMPASS
213

Medchemexpress LLC MEDCHEMEXPRESS LLC
SDP

5000596672 AURISTATIN E-D8 5MG

ENCOMPASS_PREFERRED
214

Medchemexpress LLC MEDCHEMEXPRESS LLC
SDP

5000597003 SEMAGLUTIDE-D8 TETR 1MG

ENCOMPASS_PREFERRED
215

Medchemexpress LLC MEDCHEMEXPRESS LLC
SDP

5000597007 SEMAGLUTIDE-D8 TETR 5MG

ENCOMPASS_PREFERRED
216

Echelon Biosciences Research Labs Alpha MSH, Ac-NLe4c[Asp5,DNal7,Lys10](4-10) amide - 1 mg,
SDP

Alpha MSH, Ac-NLe4c[Asp5,DNal7,Lys10](4-10) amide - 1mg , Ac-Nle-Asp-His-D-Nal-Arg-Trp-Lys-NH2 Category/Application: Neuropeptides Hormones This item is non returnable

ENCOMPASS_PREFERRED
217

Avanti Polar Lipids C18 GLCCER-D5 PDWR 1MG
SDP

D-glucosyl-beta-1,1' N-stearoyl-D-erythro-sphingosine-d5

ENCOMPASS
218

Chem Service Inc SIMAZINE 100MG
SDP

This item has a minimum order quantity of 2 per supplier requirements

ENCOMPASS_PREFERRED
219

Avanti Polar Lipids ZYMOSTEROL-D5
SDP

NC3367543 ZYMOSTEROL-D5

ENCOMPASS
220

Medchemexpress LLC 25-Hydroxy VD2-d6 | 1262843-46-8 | C28H38D6O2 | 500 UG
SDP

25-Hydroxy VD2-d6 is a deuterium labeled variant of 25-Hydroxy VD2, intended for research use only.

  • Can be used as a tracer
  • Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS

ENCOMPASS_PREFERRED
221

Sigma Aldrich Fine Chemicals Biosciences Cocaethylene-D8 solution 1

An analog of benzoylecgonine cocaethylene is a metabolite of cocaine formed in the presence of ethanol. This stable-labeled internal standard is suitable for quantitation of cocaethylene levels in urine blood and saliva by LC/MS or GC/MS for urine drug testing clinical toxicology forensic analysis or isotope dilution methods.

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222

Cayman Chemical LysoPAF C18 d4 GC MS Standards

An internal standard for the quantification of Lyso-PAF C-18 by GC- or LC-MS

ENCOMPASS_PREFERRED
223

Cambridge Isotope Laboratories Simazine (ring-13C3 99%) 100 ug/mL in acetonitrile 1 2 mL

Simazine (ring-13C3 99%) 100 ug/mL in acetonitrile 1 2 mL

ENCOMPASS
224

Cambridge Isotope Laboratories N-Propanol (D8 98%) 1 g

N-Propanol (D8 98%) 1 g

ENCOMPASS
225

Sigma Aldrich Fine Chemicals Biosciences 2-Propanol-1,1,1,3,3,3-d6 99 atom % D | 3976-29-2 | MFCD00144521 | 1G

2-Propanol-1,1,1,3,3,3-d6 99 atom % D | Purity: 99% (CP) | Mol Wt: 66.13 | 3976-29-2 | MFCD00144521 | 1G

ENCOMPASS