Thieno[3,2-d]pyrimidin-4(1H)-one CAS 16285-68-0
| CAS No. | 16285-68-0 |
| Molecular Formula | C6H4N2OS |
| Molecular Weight | 152.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Thieno[3,2-d]pyrimidin-4(1H)-one (CAS 16285-68-0), molecular formula C6H4N2OS and molecular weight 152.17 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Thieno[3,2-d]pyrimidin-4(1H)-one (C6H4N2OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Formula | C6H4N2OS |
| Molecular Weight | 152.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Thieno Standards
- 1H-Thieno[3,2-c]pyrazole-5-carbaldehyde (CAS 1529810-07-8)
- Thieno[2,3-d]pyridazin-4(5H)-one (CAS 824-23-7)
- Thieno[2,3-d]pyridazin-7(6H)-one (CAS 697-72-3)
- Thieno[3,4-d]pyrimidin-4(3h)-one (CAS 53826-73-6)
- (4H-Thieno[3,2-b]pyrrol-2-yl)methanamine (CAS 1539122-53-6)
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Recommended Standards
- 4-Hydroxythieno[3,2-d]pyrimidine (CAS 16234-10-9)
- (4S)-4-ethyl-1,3,2-dioxathiolane 2,2-dioxide (CAS 167074-05-7)
- 2-(Azetidin-3-yl)-4-fluoropyridine (CAS 1613444-30-6)
- (4R)-4-ethyl-1,3,2-dioxathiolane 2,2-dioxide (CAS 167074-07-9)
- 4-(4-Hydroxypiperidin-1-yl)benzimidamide dihydrochloride (CAS 1354953-16-4)
- Ethyl 4-oxo-4-(4-(piperidin-1-ylmethyl)phenyl)butanoate (CAS 898775-79-6)
- Methyl 4-chloro-2-oxo-1,2-dihydroquinoline-3-carboxylate (CAS 213181-22-7)
- N1,N2-Bis(benzo[d][1,3]dioxol-5-yl)oxalamide (CAS 303790-92-3)
- (4-Bromothiophen-2-yl)methanesulfonyl chloride (CAS 1250147-13-7)
- 3-Cyclohexyl-4-iodo-1-methyl-5-vinyl-1H-pyrazole (CAS 1956379-11-5)
- 7423-31-6 4MB06G6N2I Stains-all 1-Ethyl-2-(3-(1-ethylnaphtho(1,2-d)thiazol-2(1H)-ylidene)-2-methyl-1-propenyl)naphtho(1,2-d)thiazolium bromide Naphtho(1,2-d)thiazolium, 1-ethyl-2-(3-(1-ethylnaphtho(1,2-d)thiazol-2-ylidene)-2-methylpropenyl)-, bromide Naphtho(1,2-d)thiazolium, 1-ethyl-2-(3-(1-ethylnaphtho(1,2-d)thiazol-2(1H)-ylidene)-2-methyl-1-propen-1-yl)-, bromide (1:1) Naphtho(1,2-d)thiazolium, 1-ethyl-2-(3-(1-ethylnaphtho(1,2-d)thiazol-2(1H)-ylidene)-2-methyl-1-propenyl)-, bromide Carbocyanin DBTC DBTC EINECS 231-047-7 NSC 290437 3,3'-Diethyl-9-methyl-4,5,4',5'-dibenzothiacarbocyanine bromide 3,3'-Diethyl-9-methyl-4,5,4',5'-naphthothiacarbocyanine bromide 4,5,4',5'-Dibenzo-3,3'-diethyl-9-methylthiacarbocyanine bromide UNII-4MB06G6N2I (CAS 7423-31-6)
- 3'-Amino-[1,1'-biphenyl]-3-carbonitrile hydrochloride (CAS 1049744-24-2)
- Cyclopentyl (4-aminophenyl)acetate (CAS 1071289-07-0)
- [Ser]8-Acetylated Semaglutide (CAS CATO-C4X-2226218)
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