6-Chloro-4-hydroxy-2-(methylthio)pyrimidine CAS 6632-63-9
| CAS No. | 6632-63-9 |
| Molecular Formula | C5H5ClN2OS |
| Molecular Weight | 176.62 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.
6-Chloro-4-hydroxy-2-(methylthio)pyrimidine (CAS 6632-63-9), molecular formula C5H5ClN2OS and molecular weight 176.62 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, 6-Chloro-4-hydroxy-2-(methylthio)pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 176.62 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 6-Chloro-4-hydroxy-2-(methylthio)pyrimidine 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 | C5H5ClN2OS |
| Molecular Weight | 176.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-5-methylthiophene-2-carboxylic acid (CAS 123418-43-9)
- 2-Chloro-5-methylthiazole-4-carboxamide (CAS 1379296-94-2)
- 2-Chloro-1-(4-methyl-1,2,3-thiadiazol-5-yl)ethan-1-one (CAS 1504719-85-0)
- (Z)-5-chloro-n'-hydroxythiophene-2-carboximidamide (CAS 90981-26-3)
- 2-Chloro-4-methylthiazole-5-carboxamide (CAS 856658-33-8)
- 2-Chloro-4-methylthiophene-3-carboxylic Acid (CAS 85345-22-8)
- 2-chloro-5-fluoro-4-prop-1-ynyl-pyrimidine (CAS 2748015-16-7)
- 2-Chloro-5-methylthiophene-3-carboxylic acid (CAS 54494-61-0)
Recommended Standards
- 5-Chlorothiophene-2-carbohydrazide (CAS 351983-31-8)
- Methyl 2-chlorothiophene-3-carboxylate (CAS 76360-42-4)
- 5-Chloro-4-methylthiophene-2-carboxylic acid (CAS 74598-03-1)
- Methyl 3-chlorothiophene-2-carboxylate (CAS 88105-17-3)
- n-(2-Chlorophenyl)-2-(2-ethoxy-4-formylphenoxy)acetamide (CAS 575499-01-3)
- (2-(4-(Difluoromethoxy)-3-isopropoxyphenyl)oxazol-4-yl)methanamine (CAS 1574286-10-4)
- (1R,5S)-bicyclo[3.2.1]Octane-3-carboxylic acid (CAS 1488298-28-7)
- 7-Hydroxy Coumarin- (CAS 1189992-05-9)
- 3-Fluoro-4-iodotoluene (CAS 452-79-9)
- tert-Butyl (R)-2-((methylamino)methyl)pyrrolidine-1-carboxylate (CAS 783325-25-7)
- N1,N1,4-trimethylbenzene-1,2-diamine dihydrochloride (CAS 1269199-29-2)
- 2-(2-((tert-Butoxycarbonyl)amino)-5-methylthiazol-4-yl)acetic acid (CAS 652981-44-7)
- 2-Methyl-4-piperidin-3-yl-6-trifluoromethyl-pyrimidine hydrochloride (CAS 1361116-99-5)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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