Isotope Standards
Cayman Chemical CyfluthrIn-d6 1.2mL
An internal standard for the quantification of cyfluthrin by GC- or LC-MS
Medchemexpress LLC D4-abiraterone | 154229-21-7 | 99.9% | 347.50 | 50 MG
D4-abiraterone | 154229-21-7 | 99.9% | 347.50 | 50 MG
Medchemexpress LLC Simazine | 122-34-9 | 99.4% | 1 ML
Simazine is a triazine herbicide widely used in agriculture and plant production. It induces apoptosis of immune cells and inhibits B and T cell proliferation in mice. Simazine can also disrupt spindle morphology, affect mitochondrial function, increase ROS, and induce DNA damage and early apoptosis in mouse oocytes. In vivo, it leads to immunosuppression and immunotoxicity in mice.
- Target: Triazine herbicide.
- Biological activity: Induces immune cell apoptosis; inhibits B and T cell proliferation.
- In vitro effects: Inhibits oocyte maturation; disrupts spindle; affects mitochondrial function; increases ROS; induces DNA damage and apoptosis.
- In vivo effects: Causes immunosuppression and immunotoxicity; reduces spleen T and B cell proliferation.
- Storage: 4°C, protected from light. In solvent: -80°C for 6 months; -20°C for 1 month.
Cayman Chemical ArachIdonIc ACDd8 methyl S 1mg
An internal standard for the quantification of arachidonic acid methyl ester by GC- or LC-MS
Medchemexpress LLC Ribociclib-d6 | 1328934-40-2 | 99.9% | 440.57 g/mol | C23H24D6N8O | 10 MG
Ribociclib-d6 is a deuterium-labeled isotopologue used as a stable isotope tracer and internal standard for quantitative bioanalytical methods such as NMR, GC-MS, and LC-MS.
- Deuterium-labeled internal standard for NMR, GC-MS, and LC-MS quantitative analysis.
- High chemical and isotopic purity (99.9%).
- Molecular formula C23H24D6N8O; molecular weight 440.57 g/mol.
- Solid, off-white to yellow appearance; provided as a 10 MG vial.
- Recommended storage: powder -20°C (up to 3 years) or 4°C (up to 2 years); in solvent -80°C (6 months) or -20°C (1 month).
Medchemexpress LLC Imidacloprid-urea | 120868-66-8 | MFCD02661472 | 99.9% | C9H10ClN3O | 10MG
Imidacloprid-urea is the urea metabolite of the insecticide imidacloprid, provided as a high-purity analytical reference standard for research, metabolite identification, and environmental fate studies. The product is offered in small quantities and is accompanied by product documentation and batch-specific analytical data.
- High purity suitable for analytical applications.
- Available in multiple small sizes including 10 mg.
- Supplied as a solid powder, off-white to light yellow.
- Datasheet and batch-specific certificate of analysis available.
- Intended for metabolite and environmental fate research.
Medchemexpress LLC Enzalutamide-d6 | 1443331-94-9 | 99.85% | C21H10D6F4N4O2S | 1 MG
Enzalutamide-d6 (MDV3100-d6) is a deuterium-labeled version of Enzalutamide (MDV3100), functioning as an androgen receptor (AR) antagonist with an IC50 of 36 nM in LNCaP prostate cells. This compound is primarily used as a tracer and an internal standard for quantitative analysis in drug development.
- Tracer for quantitation during drug development
- Internal standard for quantitative analysis by NMR, GC-MS, or LC-MS
- Deuteration may affect pharmacokinetic and metabolic profiles of drugs
Medchemexpress LLC Imidacloprid (standard) | 138261-41-3 | 98.68% | 50 MG
Imidacloprid (Standard) is the analytical standard of Imidacloprid. This product is intended for research and analytical applications. Imidacloprid is an effective and widely used neonicotinoid pesticide to control pests of cereals, vegetables, tea and cotton. For research use only. We do not sell to patients.
- Reference standard supplied assay
- Used in qualitative, quantitative and methodological research experiments
- Suitable for HPLC, GC and MS applications
Sigma Aldrich Fine Chemicals Biosciences Nitazoxanide >=98% (HPLC) | 55981-09-4 | MFCD00416599 | 50MG
Nitazoxanide >=98% (HPLC) | Purity: >=98% (HPLC) | Mol Wt: 307.28 | 55981-09-4 | MFCD00416599 | 50MG
Sigma Aldrich Fine Chemicals Biosciences Benzidine-(rings-d8) 98 atom % D | 92890-63-6 | MFCD00143662 | 100MG
Benzidine-(rings-d8) 98 atom % D | Purity: 99% (CP) | Mol Wt: 192.29 | 92890-63-6 | MFCD00143662 | 100MG
Sigma Aldrich Fine Chemicals Biosciences Acenaphthylene-d8 >=98 atom % D, 98% (CP) | 93951-97-4 | MFCD00143527 | 100MG
Acenaphthylene-d8 >=98 atom % D, 98% (CP) | Purity: 98% (CP) | Mol Wt: 160.24 | 93951-97-4 | MFCD00143527 | 100MG
Medchemexpress LLC Cycloguanil (hydrochloride) | 152-53-4 | >99.9% | 10 MG
Cycloguanil (hydrochloride) is a dihydrofolate reductase (DHFR) inhibitor, effective against human DHFR with an IC50 of 10.8 μM. It interferes with DNA replication by blocking the folate metabolic pathway, thereby affecting nucleotide synthesis. This compound is utilized in malaria research due to its ability to inhibit DHFR in *Plasmodium*, and also demonstrates anticancer activity by potently inhibiting DHFR in human cancer cells and blocking the transcriptional activity of STAT3.
- Blocks folate metabolic pathway
- Affects nucleotide synthesis and DNA replication
- Used in malaria research by inhibiting DHFR in *Plasmodium*
- Potently inhibits DHFR in human cancer cells
- Blocks transcriptional activity of STAT3, exhibiting anticancer activity
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
Sigma Aldrich Fine Chemicals Biosciences Isotopic standard for chlorine NIST(R) SRM(R) 975a | 7647-14-5 | MFCD00003477 |
Isotopic standard for chlorine NIST(R) SRM(R) 975a | Mol Wt: 58.44 | 7647-14-5 | MFCD00003477 |