tert-Butyl 2-(ethylthio)-4-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate CAS 338740-07-1
| CAS No. | 338740-07-1 |
| Molecular Formula | C14H21N3O3S |
| Molecular Weight | 311.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including tert-Butyl 2-(ethylthio)-4-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate.
tert-Butyl 2-(ethylthio)-4-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (CAS 338740-07-1), molecular formula C14H21N3O3S and molecular weight 311.40 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, tert-Butyl 2-(ethylthio)-4-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures tert-Butyl 2-(ethylthio)-4-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H21N3O3S |
| Molecular Weight | 311.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- Sumatriptan EP Impurity D (CAS 212069-94-8)
- tert-Butyl 2-(methylthio)-4-oxo-3,4,5,6,7,9-hexahydro-8H-pyrimido[4,5-c]azepine-8-carboxylate (CAS 2412424-99-6)
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- 3,6-Dimethyl-5-nitropyrimidine-2,4(1H,3H)-dione (CAS 27889-92-5)
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- 1-(3-Methoxyphenyl)butan-1-amine hydrochloride (CAS 1864057-25-9)
- Beclometasone Impurity 52 (CAS CATO-C4X-147452)
- tert-Butyl 2-carbamoylbenzyl(methyl)carbamate (CAS 1823521-13-6)
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- benzyl (3R)-3-iodopyrrolidine-1-carboxylate (CAS 1353995-39-7)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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