(3-Ethynylphenyl)boronic acid CAS 1189127-05-6
| CAS No. | 1189127-05-6 |
| Molecular Formula | C8H7BO2 |
| Molecular Weight | 145.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, (3-Ethynylphenyl)boronic acid (C8H7BO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 145.95 g/mol, it falls into the low-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
(3-Ethynylphenyl)boronic acid (CAS 1189127-05-6), molecular formula C8H7BO2 and molecular weight 145.95 g/mol, is a CATO reference standard with documented purity and traceability.
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), (3-Ethynylphenyl)boronic acid 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 | C8H7BO2 |
| Molecular Weight | 145.95 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
Related Ethynylphenyl Standards
- (4-ethynylphenyl)boronic acid (CAS 263368-72-5)
- (R)-1-(4-Ethynylphenyl)ethan-1-ol (CAS 1007587-64-5)
- 2-(2-Ethynylphenyl)ethan-1-ol (CAS 1239085-74-5)
- (R)-1-(3-Ethynylphenyl)ethan-1-ol (CAS 2227716-99-4)
- (S)-1-(3-Ethynylphenyl)ethan-1-ol (CAS 2227861-55-2)
- (S)-1-(4-Ethynylphenyl)ethan-1-ol (CAS 945451-09-2)
- 2-(4-Ethynylphenyl)ethan-1-ol (CAS 331735-28-5)
- (R)-1-(3-Ethynylphenyl)ethan-1-amine (CAS 1212877-39-8)
Recommended Standards
- (((3-Amino-2-oxopropyl)amino)methyl)boronic acid (CAS 1063700-94-6)
- (5-Fluorothiophen-2-yl)boronic acid (CAS 1360465-64-0)
- Neodymium 146 (CAS 15411-67-3)
- (4-Fluorothiophen-2-yl)boronic acid (CAS 1360465-66-2)
- 6-(Benzyloxy)hexan-1-ol (CAS 71126-73-3)
- 3-(1-Imidazolyl)propanamide (CAS 43115-74-8)
- 1,2,3,4-Tetrahydroquinolin-4-ol hydrobromide (CAS 24206-40-4)
- 3-Nitro-1H-pyrrolo[2,3-c]pyridine-7-carboxylic acid (CAS 1190310-03-2)
- Fluocinolone Acetonide Impurity 39 (CAS CATO-C4X-238139)
- (R)-2,2-dimethyl-1-(2,4,5-trifluorophenyl)propan-1-amine (CAS 1388126-37-1)
- 1-(2-(Dipropylamino)-2-oxoethyl)azetidine-3-carboxylic acid (CAS 1408104-16-4)
- Ethyl 5-(2-chlorobenzamido)-3-methylbenzofuran-2-carboxylate (CAS 923178-80-7)
- N-(4-(Thiophen-2-yl)thiazol-2-yl)-3-(p-tolylthio)propanamide (CAS 895461-93-5)
- Acetyl-Exenatide trifluoroacetate salt (CAS 305815-28-5)
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