Organic nitroso compounds

4-Amino-2,6-dihydroxy-5-nitrosopyrimidine 93.0+%, TCI America™

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CAS: 5442-24-0 Molecular Formula: C4H4N4O3 Molecular Weight (g/mol): 156.101 MDL Number: MFCD00012340 InChI Key: DKPCSXFEWFSECE-UHFFFAOYSA-N Synonym: 4-Amino-5-nitro-2,6-pyrimidinediol, 6-Amino-5-nitrosouracil PubChem CID: 79510 IUPAC Name: 6-amino-5-nitroso-1H-pyrimidine-2,4-dione SMILES: C1(=C(NC(=O)NC1=O)N)N=O

4-Nitrosodiphenylamine 97.0+%, TCI America™

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CAS: 156-10-5 Molecular Formula: C12H10N2O Molecular Weight (g/mol): 198.23 MDL Number: MFCD00002062 InChI Key: OIJHFHYPXWSVPF-UHFFFAOYSA-N Synonym: 4-nitrosodiphenylamine,p-nitrosodiphenylamine,4-nitroso-n-phenylbenzenamine,p-nitroso-n-phenylaniline,diphenylamine, 4-nitroso,naugard tkb,benzenamine, 4-nitroso-n-phenyl,p-nitrosodifenylamin,n-phenyl-p-nitrosoaniline,p-phenylaminonitrosobenzene PubChem CID: 9074 ChEBI: CHEBI:82509 IUPAC Name: 4-nitroso-N-phenylaniline SMILES: O=NC1=CC=C(NC2=CC=CC=C2)C=C1

2,4,6-Triamino-5-nitrosopyrimidine 98.0+%, TCI America™

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CAS: 1006-23-1 Molecular Formula: C4H6N6O Molecular Weight (g/mol): 154.13 MDL Number: MFCD00006096 InChI Key: XLQQJSWJHHKLOK-UHFFFAOYSA-N PubChem CID: 70504 IUPAC Name: 5-nitrosopyrimidine-2,4,6-triamine SMILES: NC1=NC(N)=C(N=O)C(N)=N1

Medchemexpress LLC N-nitrosomorpholine-d8 | 1219805-76-1 | MFCD08704880 | 99.7% | 124.17 g·mol⁻1 | C4D8N2O2 | 5 MG

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N-Nitrosomorpholine-d8 is a deuterium-labeled analogue of N-nitrosomorpholine used as an isotope-labeled reference standard and internal standard for analytical testing and quantitation of nitrosamines. It is photosensitive and a potent animal carcinogen; handle with appropriate engineering controls and personal protective equipment, and consult the SDS and batch COA for safety and purity details.

• CAS number: 1219805-76-1.
• Molecular formula: C4D8N2O2.
• Molecular weight: 124.17 g·mol⁻1.
• Purity (HPLC): 99.7%.
• Appearance: Colorless to light yellow liquid.
• Storage: pure form -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months) or -20°C (1 month).
• Intended use: isotope-labeled reference standard for analytical and quantitation applications.

Medchemexpress LLC L-tryptophanamide, N-((3-methyl-1H-inden-2-yl)carbonyl)-D-alanyl-N-((1S)-2-((2R)-2-methyl-2-oxiranyl | 1416709-79-9 | 98.9% | 618.72 g·mol⁻¹ | C37H38N4O5 | 10MM 1ML

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PR-924 is a selective tripeptide epoxyketone inhibitor of the immunoproteasome subunit LMP-7, intended for research use in biochemical and cellular assays. It is supplied in ready-to-use solutions and in solid quantities to support formulation and dosing studies.

• Selective tripeptide epoxyketone LMP-7 inhibitor.
• Available as 10 mM solution in DMSO and multiple solid sizes.
• High reported purity: 98.9%.
• Molecular weight 618.72 g·mol⁻¹; formula C37H38N4O5.
• Soluble in DMSO; in vivo formulation options described for PEG300/tween/saline and corn oil.
• Storage recommendations provided for powder and in solvent to preserve stability.

Medchemexpress LLC N-nitroso-3-azabicyclo[3.3.0]octane-d4 | 1346604-35-0 | 95.0% | C7H8D4N2O | 10MG

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N-Nitroso-3-azabicyclo[3.3.0]octane-d4 is a deuterium-labeled N-nitroso azabicyclic compound supplied for research use as an isotope-labeled standard. It is intended for use as a tracer or internal standard in quantitative analyses by NMR, GC-MS, or LC-MS, and is provided with specified purity and cold-storage recommendations to maintain stability.

• Deuterium-labeled internal standard for quantitative analysis.
• Suitable for NMR, GC-MS, and LC-MS applications.
• Provided with stated purity of 95.0%.
• Available in multiple small pack sizes, including 10 mg, for trace-level work.
• Recommended storage: pure form at -20°C; in solvent, -80°C for extended stability.

Medchemexpress LLC S-nitroso-N-acetyl-DL-penicillamine | 67776-06-1 | 98.8% | 5 MG

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S-nitroso-N-acetyl-DL-penicillamine (SNAP) is a nitric oxide donor commonly used in biochemical research to provide controlled NO release for studies of vascular function, signaling pathways, and platelet aggregation. It is supplied as a high-purity research chemical for in vitro experiments.

• Releases nitric oxide under physiological conditions.
• Suitable for studies of vasodilation and platelet aggregation.
• High purity (98.8% by HPLC) as confirmed by COA.
• Defined molecular properties: 220.25 g/mol, formula C7H12N2O4S.
• Available in small research pack sizes for laboratory use.

Medchemexpress LLC N-nitroso-n-methyl-4-aminobutyric acid | 61445-55-4 | MFCD00869939 | 99.9% | 146.14 | C5H10N2O3 | 50 MG

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N-nitroso-n-methyl-4-aminobutyric acid is a tobacco-derived nitrosamine used as a research chemical and analytical reference. It is supplied as a colorless to light yellow liquid with high reported purity and is intended for research use only.

• High purity (HPLC): 99.88%.
• Molecular formula C5H10N2O3.
• Molecular weight 146.14.
• Appearance liquid, colorless to light yellow.
• Available in small milligram packs, including 50 mg.
• CAS number 61445-55-4.
• Tobacco-specific nitrosamine; identified as a carcinogen.
• For research use only; not for sale to patients.