5,6-Dichloro-1,3-dihydro-2H-imidazo[4,5-b]pyrazin-2-one CAS 79100-20-2

Purity 97%+In StockPharmaceutical Standards
CAS No.79100-20-2
Molecular FormulaC5H2Cl2N4O
Molecular Weight205.00 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,6-Dichloro-1,3-dihydro-2H-imidazo[4,5-b]pyrazin-2-one CAS 79100-20-2 chemical structure

Description

The occurrence of 5,6-Dichloro-1,3-dihydro-2H-imidazo[4,5-b]pyrazin-2-one is closely related to an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5,6-Dichloro-1,3-dihydro-2H-imidazo[4,5-b]pyrazin-2-one (CAS 79100-20-2) is a high-purity analytical reference standard with the molecular formula C5H2Cl2N4O and a molecular weight of 205.00 g/mol.

Structurally, 5,6-Dichloro-1,3-dihydro-2H-imidazo[4,5-b]pyrazin-2-one (C5H2Cl2N4O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 205.00 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC5H2Cl2N4O
Molecular Weight205.00 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1979
Halogen ContentCl-containing
Nitrogen Atoms4

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