23945-50-8 5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-4-oxo-2-thioxo- 1,2,3,4-Tetrahydro-4-oxo-2-thioxopyrimidine-5-carboxylic acid EINECS 245-948-8 2-Thiouracil-5-carboxylic acid CAS 23945-50-8

Purity 97%+In StockPharmaceutical Standards
CAS No.23945-50-8
Molecular FormulaC5H4N2O3S
Molecular Weight172.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

23945-50-8
5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-4-oxo-2-thioxo-
1,2,3,4-Tetrahydro-4-oxo-2-thioxopyrimidine-5-carboxylic acid
EINECS 245-948-8
2-Thiouracil-5-carboxylic acid CAS 23945-50-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 172.16 g/mol gives 23945-50-8 5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-4-oxo-2-thioxo- 1,2,3,4-Tetrahydro-4-oxo-2-thioxopyrimidine-5-carboxylic acid EINECS 245-948-8 2-Thiouracil-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

23945-50-8 5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-4-oxo-2-thioxo- 1,2,3,4-Tetrahydro-4-oxo-2-thioxopyrimidine-5-carboxylic acid EINECS 245-948-8 2-Thiouracil-5-carboxylic acid (CAS 23945-50-8) is a high-purity analytical reference standard with the molecular formula C5H4N2O3S and a molecular weight of 172.16 g/mol.

Structurally, 23945-50-8 5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-4-oxo-2-thioxo- 1,2,3,4-Tetrahydro-4-oxo-2-thioxopyrimidine-5-carboxylic acid EINECS 245-948-8 2-Thiouracil-5-carboxylic acid (C5H4N2O3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 172.16 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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

As a certified reference material (CRM), 23945-50-8 5-Pyrimidinecarboxylic acid, 1,2,3,4-tetrahydro-4-oxo-2-thioxo- 1,2,3,4-Tetrahydro-4-oxo-2-thioxopyrimidine-5-carboxylic acid EINECS 245-948-8 2-Thiouracil-5-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC5H4N2O3S
Molecular Weight172.16 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1963
Nitrogen Atoms2
Sulfur Atoms1

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