Methyl 5,5,7,7-tetramethyl-2-(thiophene-2-carboxamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate CAS 887900-27-8
| CAS No. | 887900-27-8 |
| Molecular Formula | C18H22N2O3S2 |
| Molecular Weight | 378.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methyl 5,5,7,7-tetramethyl-2-(thiophene-2-carboxamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate (CAS 887900-27-8), a certified reference material (molecular formula C18H22N2O3S2, MW 378.51 g/mol) for analytical method development and quality control.
Structurally, Methyl 5,5,7,7-tetramethyl-2-(thiophene-2-carboxamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate (C18H22N2O3S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 378.51 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Methyl 5,5,7,7-tetramethyl-2-(thiophene-2-carboxamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate 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 Formula | C18H22N2O3S2 |
| Molecular Weight | 378.51 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
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Recommended Standards
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- N-(5-((2-((2,3-Dimethylphenyl)amino)-2-oxoethyl)thio)-1,3,4-thiadiazol-2-yl)pentanamide (CAS 392294-17-6)
- 6-Chloro-1-(2,2,2-trifluoroethyl)-1H-pyrazolo[4,3-c]pyridin-3-amine (CAS 2416967-98-9)
- 4-(4-Bromobenzyl)aniline (CAS 500579-43-1)
- 5-Methyl-1-phenyl-[1,2,4]triazolo[4,3-a]quinoline (CAS 127621-35-6)
- 6-Methoxy-2-(methylthio)quinolin-4(1H)-one (CAS 123420-07-5)
- 6-Isopropyl-2-(4-((2-methylpiperidin-1-yl)sulfonyl)benzamido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxamide (CAS 449768-63-2)
- Aprepitant Impurity 34 (CAS 30071-93-3)
- (4s)-6,8-Difluoro-3,4-dihydro-2h-1-benzopyran-4-amine hydrochloride (CAS 1187928-90-0)
- 3-Acetyl-6-chloroquinolin-2(1H)-one (CAS 1017386-44-5)
- Fingolimod Impurity 29 (CAS CATO-C4X-164629)
- Liraglutide(5-31)TFA Salt (CAS CATO-C4X-19924)
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