Isobutyl 2-(1-ethyl-2-oxoindolin-3-ylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate CAS 618078-08-3
| CAS No. | 618078-08-3 |
| Molecular Formula | C26H25N3O4S2 |
| Molecular Weight | 507.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Isobutyl 2-(1-ethyl-2-oxoindolin-3-ylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618078-08-3) is a high-purity analytical reference standard with the molecular formula C26H25N3O4S2 and a molecular weight of 507.62 g/mol.
Isobutyl 2-(1-ethyl-2-oxoindolin-3-ylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (C26H25N3O4S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Isobutyl 2-(1-ethyl-2-oxoindolin-3-ylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-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 | C26H25N3O4S2 |
| Molecular Weight | 507.62 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Isobutyl Standards
- Isobutyl 2-(1-allyl-2-oxoindolin-3-ylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618077-83-1)
- Isobutyl 7-methyl-2-(1-methyl-2-oxoindolin-3-ylidene)-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618078-11-8)
- Isobutyl 7-methyl-3-oxo-2-(2-oxo-1-propylindolin-3-ylidene)-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618078-19-6)
- Isobutyl 2-(1-butyl-2-oxoindolin-3-ylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618078-05-0)
- 3-Isobutyl-5-((3-(4-methoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2-thioxothiazolidin-4-one (CAS 623933-10-8)
- Ethyl 2-(2-Isobutyl-6-quinolyloxy-8-p-toluenesulfonamido)acetate (CAS 316124-91-1)
- 2-((3-Isobutyl-4-oxo-3,4-dihydroquinazolin-2-yl)thio)-N-(4-(trifluoromethoxy)phenyl)acetamide (CAS 882083-32-1)
- 2-((4-Isobutyl-5-(3-(morpholinosulfonyl)phenyl)-4h-1,2,4-triazol-3-yl)thio)acetic acid (CAS 743457-07-0)
Recommended Standards
- Dibenzyl D,L-Stepholidine (CAS 62744-18-7)
- Isopropyl 7-methyl-3-oxo-2-(2-oxo-1-propylindolin-3-ylidene)-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 618077-86-4)
- Cytochalasin C (CAS 22144-76-9)
- N-(3-Methoxyphenyl)-2-((3-(4-methoxyphenyl)-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 477330-86-2)
- N,N'-Dimorpholinomethane (CAS 5625-90-1)
- 1-(3-Fluorophenyl)-4-methyl-1H-pyrazol-5-amine (CAS 1448855-33-1)
- 2-(2-((Cyclohexylmethyl)amino)ethoxy)ethan-1-ol (CAS 932278-84-7)
- 5-Methyl-1-heptene, 97% (CAS 13151-04-7)
- (2S)-1,4-bis(tert-butoxycarbonyl)-2-methyl-piperazine-2-carboxylic acid (CAS 2380571-73-1)
- 4-(Chloromethyl)-2-fluoro-1-methoxybenzene (CAS 351-52-0)
- 1-(3-Methoxycyclohexyl)-1h-pyrazol-3-amine (CAS 1341566-43-5)
- (R,E)-2-Methyl-N-(2,2,2-trifluoroethylidene)propane-2-sulfinamide (CAS 1219607-83-6)
- 8-(2,4-Dichlorophenyl)-8-oxooctanoic acid (CAS 898791-27-0)
- Cholecystokinin Octapeptide (1-4) (desulfated) (CAS 80790-40-5)
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