Isotopically Labeled Compounds

Medchemexpress LLC Isobutylparaben-d4 (isobutyl 4-hydroxybenzoate-d4) | 1219805-33-0 | 98.5% | 198.25 g/mol | C11H10D4O3 | 5 MG

Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

Isobutylparaben-d4 is the deuterium-labeled analogue of isobutylparaben used as an analytical standard for quantitative assays, including LC-MS, where isotope dilution improves accuracy and precision. Supplied as a purified powder for research use, it facilitates trace-level detection and method validation.

• Deuterium-labeled internal standard for LC-MS quantitation.
• High purity for accurate analytical results.
• Molecular weight 198.25 g/mol and formula C11H10D4O3.
• Powder form with recommended storage at -20°C; solvent stability at -80°C (6 months) and -20°C (1 month).
• Ideal small-quantity packaging for method development and validation.

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Medchemexpress LLC Suberic acid-d4 (octanedioic acid-d4) | 19031-57-3 | 99.9% | 178.22 | C8H10D4O4 | 50 MG

Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

Suberic acid-d4 (octanedioic acid-d4) is the deuterated analogue of suberic acid supplied as a high-purity solid for use as a stable isotope internal standard in analytical workflows. It is intended for LC-MS quantification, metabolic tracing, and analytical method development.

• Deuterium-labeled stable isotope standard.
• High chemical and isotopic purity (99.93%).
• Solid form with white to light yellow appearance.
• Suitable for LC-MS and method development applications.
• Available in small analytical package sizes, including 50 mg.
• Recommended storage: powder at -20°C (stable up to 3 years).

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Revvity Health Sciences Inc Progesterone, [1,2,6,7-³H(N)]-, 1mCi (37MBq)

Progesterone, [1,2,6,7-³H(N)]-, 1mCi (37MBq)

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Revvity Health Sciences Inc Glucose, D-[3-3H]-, Ethanol Solution, 1 mCi (37 MBq)

Glucose, D-[3-3H]-, Ethanol Solution, 1 mCi (37 MBq)

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Revvity Health Sciences Inc Î±-Bungarotoxin, [¹²⁵I]-Tyr⁵⁴-, 250µCi (9.25MBq)

α-Bungarotoxin, [¹²⁵I]-Tyr⁵⁴-, 250µCi (9.25MBq)

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Revvity Health Sciences Inc Dihydrotestosterone (5α androstan-17β-ol-3-one), [1,2,4,5,6,7-³H(N)]-, 250µCi (9.25MBq)

Dihydrotestosterone (5α androstan-17β-ol-3-one), [1,2,4,5,6,7-³H(N)]-, 250µCi (9.25MBq)

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

American Radiolabeled Chemicals Inc CHOLIC ACID-CARB-14C 50UC

Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

Cholic acid-carboxyl-14C 50uCi in ethanol, 0.1 mCi/ml, S.A. 50-60 mCi/mmol, M.W. 408.6

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Medchemexpress LLC L-Leucine-1-13C,15N | 80134-83-4 | 133.16 | 50 MG

Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

L-Leucine-1-13C,15N is the 13C- and 15N-labeled L-Leucine. L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR signaling pathway. This compound can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.

• Used as a tracer.
• Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
• Activates the mTOR signaling pathway.
• 13C- and 15N-labeled L-Leucine.
• Essential branched-chain amino acid (BCAA).

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Medchemexpress LLC Citric acid-d4 | 147664-83-3 | 196.15 | 25 MG

Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

Citric acid-d4 is the deuterium labeled Citric acid (HY-N1428). Citric acid is a natural preservative and food tartness enhancer. It induces apoptosis and cell cycle arrest at G2/M phase and S phase in HaCaT cells. Citric acid can cause oxidative damage of the liver by decreasing antioxidative enzyme activities. It is also an acidulant, emulsifier, sequestrant, and buffering agent widely used across many industries. This product is for research use only and not sold to patients.

• Can be used as a tracer.
• Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
• Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, primarily as tracers for quantitation during drug development.
• Deuteration has garnered attention due to its potential to affect the pharmacokinetic and metabolic profiles of drugs.

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Revvity Health Sciences Inc dATP, [α-³²P]- 6000Ci/mmol 20mCi/ml EasyTide, 1 mCi

dATP, [α-³²P]- 6000Ci/mmol 20mCi/ml EasyTide, 1 mCi

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Revvity Health Sciences Inc dGTP, [α-³²P]- 3000Ci/mmol 10mCi/ml EasyTide, 500 µCi

dGTP, [α-³²P]- 3000Ci/mmol 10mCi/ml EasyTide, 500 µCi

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Sigma Aldrich Fine Chemicals Biosciences Dimethyl sulfoxide-d6 34

Dimethyl sulfoxide-d6 (DMSO-d6) is a deuterated NMR solvent containing 0.03% (v/v) TMS (tetramethylsilane). It is useful in NMR-based research and analyses. It undergoes photodissociation to generate CD3 radical photoproducts which have been analyzed by infrared diode laser-absorption spectroscopy. Dissociation dynamics of DMSO-d6 at 193nm was examined using photo fragment translational spectroscopy method.

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Medchemexpress LLC MEDCHEMEXPRESS LLC

Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

5000452025 DOCOSANOIC ACID-D3 5MG

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Sigma Aldrich Fine Chemicals Biosciences Methanol-d4 99.8 atom D10G

METHANOL Methanol-d4 99.8 atom D10G

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More

Sigma Aldrich Fine Chemicals Biosciences Tetrahydrofuran-d8 99.5 at1G

Tetrahydrofuran-d8 may be used as a solvent in the synthesis of deuteriotris[bis(trimethylsilyl)amido]thorium and deuteriotris[bis(trimethylsiiyl)amido]uranium.

Encompass Procurement Services
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More