Methyl 3-ethynyl-2-methylbenzoate CAS 149654-03-5
| CAS No. | 149654-03-5 |
| Molecular Formula | C11H10O2 |
| Molecular Weight | 174.20 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 Methyl 3-ethynyl-2-methylbenzoate.
Methyl 3-ethynyl-2-methylbenzoate (CAS 149654-03-5), molecular formula C11H10O2 and molecular weight 174.20 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H10O2, Methyl 3-ethynyl-2-methylbenzoate contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 174.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Methyl 3-ethynyl-2-methylbenzoate 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 | C11H10O2 |
| Molecular Weight | 174.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
Related Methyl Standards
- Methyl 4-ethynyl-3-methylbenzoate (CAS 123279-38-9)
- Methyl 3-ethynyl-4-methylbenzoate (CAS 1255099-13-8)
- 5-Ethynyl-2,4-dimethylbenzoic acid (CAS 1863238-98-5)
- Methyl 2-ethynyl-4-methylbenzoate (CAS 2113642-19-4)
- Methyl 5-ethynyl-2-methylbenzoate (CAS 2052833-70-0)
- 7-Ethynyl-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one (CAS 1824105-71-6)
- 7-Ethynyl-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one (CAS 1824123-04-7)
- 4-Ethynyl-2-isopropyl-1-methoxybenzene (CAS 56460-37-8)
Recommended Standards
- (2-Acetamidoethyl)alanine (CAS 1486617-48-4)
- 1-(4-Methylphenyl)-1h-1,2,3-triazol-4-amine (CAS 1497023-17-2)
- 1,7-dimethyl-1,2-dihydro-1,8-naphthyridin-2-one (CAS 148244-86-4)
- (5-Phenyl-1H-pyrazol-4-yl)methanol (CAS 149872-98-0)
- 4,6-dichloro-5-methyl-2-(pyridin-2-yl)pyrimidine (CAS 10198-77-3)
- (2-Iodo-5-(trifluoromethyl)phenyl)methanamine (CAS 1261612-96-7)
- 2-Bromo-1-(3-bromophenyl)ethanol (CAS 194721-56-7)
- 3-(4-Chlorophenyl)-5-(furan-2-yl)-1-phenyl-4,5-dihydro-1H-pyrazole (CAS 4035-38-5)
- N-cyclopropyl-5,6,7,8-tetrahydropyrido[4,3-c]pyridazin-3-amine (CAS 1894088-53-9)
- 2-Amino-5-(4-fluorophenyl)isonicotinic acid (CAS 1214370-50-9)
- trans-3-methoxycyclopentan-1-amine hydrochloride (CAS 2243802-43-7)
- Larixyl acetate (CAS 4608-49-5)
- Ethyl (1S,2R,3R,5R)-2-((tert-butoxycarbonyl)amino)-6-oxabicyclo[3.1.0]hexane-3-carboxylate (CAS 959745-87-0)
- [Formaldehyde Schiff-base]-Semaglutide Impurity 136 X TFA Salt (CAS CATO-C4X-2226136)
Why CATO?
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