Isotopically Labeled Compounds
Medchemexpress LLC Ribitol-3-13C | 488-81-3 | 99.7% | 153.14 | C413CH12O5 | 5 MG
Ribitol-3-13C is a 13C-labeled ribitol provided as a stable isotope reference standard for analytical and metabolic research. It is intended for use as an internal standard or tracer in mass spectrometry and metabolic flux assays, supplied in small quantities suitable for laboratory workflows.
- High isotopic enrichment and 99.7% chemical purity.
- Suitable as an internal standard for GC/MS and LC/MS analyses.
- Useful for metabolic tracing and flux experiments.
- Available in small, precise quantities for laboratory use.
- Stable crystalline form with defined molecular weight for reliable quantitation.
Medchemexpress LLC (S)-Lathosterol-d4 | 1182005-25-9 | 99.7% | 390.68 | 500 UG
(S)-Lathosterol-d4 is a deuterium-labeled derivative of (S)-Lathosterol. Lathosterol itself is a molecule similar to cholesterol. The concentration of serum lathosterol is used as an indicator for the synthesis of cholesterol in the whole body. This compound is intended for research use only and is not sold to patients.
- Deuterium labeled (S)-Lathosterol.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis by techniques such as NMR, GC-MS, or LC-MS.
- Stable heavy isotopes of hydrogen, carbon, and other elements can be incorporated into drug molecules for use as tracers in drug development.
- Deuteration can potentially influence the pharmacokinetic and metabolic profiles of drugs.
![Revvity Health Sciences Inc PACAP27, [<sup>125</sup>I]-, 25µCi (925kBq)](https://assets.fishersci.com/TFS-Assets/CCG/product-images/509050764.jpg-250.jpg)
Cayman Chemical StearIc AcId-9 10-d2 1mg
An internal standard for the quantification of stearic acid by GC- or LC-MS
Cayman Chemical AldIcarb sulfon 250mg
A metabolite and degradation product of aldicarb; reduces the number of male T. semipenetrans second-stage larvae that reach the third, fourth, and adult stages of development at 100 μg/ml
![Revvity Health Sciences Inc Calcitonin [Tyr22] (salmon), [<sup>125</sup>I] 10 µCi](https://assets.fishersci.com/TFS-Assets/CCG/product-images/VN00001872-502097606.JPG-250.jpg)
Revvity Health Sciences Inc Calcitonin [Tyr22] (salmon), [125I] 10 µCi
Calcitonin [Tyr22] (salmon), [125I] 10 µCi
Cambridge Isotope Laboratories METHYL CHLOROFORMATE (D3, 99%), 1 G
METHYL CHLOROFORMATE (D3, 99%), 1 G
Medchemexpress LLC rel-Ritonavir-d6 | 1217720-20-1 | 98.7% | C37H42D6N6O5S2 | 1 MG
rel-Ritonavir-d6 is the deuterium labeled rel-Ritonavir, which is a relative configuration of Ritonavir (HY-90001). Ritonavir (ABT 538) is an inhibitor of HIV protease used to study HIV infection and AIDS. Ritonavir is also a SARS-CoV 3CLpro inhibitor with an IC50 of 1.61 μM. Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
Medchemexpress LLC Triphenylene-d12 | 17777-56-9 | 98% | 240.36 | 25 MG
Triphenylene-d12 is a deuterium labeled triphenylene intended for research use only. It can be utilized as a tracer or as an internal standard for quantitative analysis through techniques such as NMR, GC-MS, or LC-MS. Deuteration has shown potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Deuterium labeled compound
- Suitable for use as a tracer
- Functions as an internal standard for quantitative analysis
- Applicable in NMR, GC-MS, and LC-MS analytical methods
- White to off-white solid appearance
- Store at room temperature for 3 years
- In solvent, store at -80°C for 2 years or -20°C for 1 year
- Isotopic enrichment of 99.8%
- Not intended for medical applications
Medchemexpress LLC Urea-15N2 | 2067-80-3 | 99.8% | 62.04 | 25 MG
Urea-15N2 is the 15N-labeled Urea. It functions as a potent protein denaturant through both direct and indirect mechanisms. It is also an effective emollient, keratolytic, and diuretic agent. This compound is used in blood urea nitrogen (BUN) measurements to assess renal function, as a nitrogen source in fertilizers, and as a crucial raw material in the chemical industry. It can be utilized as a tracer or an internal standard for quantitative analysis.
- Can be used as a tracer
- Internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Potent protein denaturant
- Effective emollient and keratolytic agent
- Functions as a diuretic agent
- Used to assess renal function
- Widely used in fertilizers as a nitrogen source
- Important raw material for the chemical industry
Cayman Chemical 17-hydroxy Exemestn-d3 500ug
An internal standard for the quantification of 17β-hydroxy exemestane and as a surrogate internal standard for related steroids such as exemestane by GC- or LC-MS
Cambridge Isotope Laboratories L-TYROSINE (RING-3,5-D2, 98%), 1 G, 30811-19-9
L-TYROSINE (RING-3,5-D2, 98%), 1 G, 30811-19-9
Cambridge Isotope Laboratories DIETHANOLAMINE (ETHYLENE-D8, 98%), 1 G, 103691-51-6
DIETHANOLAMINE (ETHYLENE-D8, 98%), 1 G, 103691-51-6