2-Ethynylbenzene-1,4-diol CAS 74047-22-6
| CAS No. | 74047-22-6 |
| Molecular Formula | C8H6O2 |
| Molecular Weight | 134.13 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 2-Ethynylbenzene-1,4-diol.
CATO supplies 2-Ethynylbenzene-1,4-diol (CAS 74047-22-6), a certified reference material (molecular formula C8H6O2, MW 134.13 g/mol) for analytical method development and quality control.
Structurally, 2-Ethynylbenzene-1,4-diol (C8H6O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 134.13 g/mol, it falls into the low-molecular-weight range. 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.
As a certified reference material (CRM), 2-Ethynylbenzene-1,4-diol 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 | C8H6O2 |
| Molecular Weight | 134.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1978 |
Related Ethynylbenzene Standards
- 3-Ethynylbenzene-1,2-diol (CAS 1314907-42-0)
- 5-Ethynylbenzene-1,3-diol (CAS 145078-84-8)
- 4-Ethynylbenzene-1,3-diol (CAS 1804946-18-6)
- 2-Ethynylbenzene-1,3-diol (CAS 466635-66-5)
- 4-Ethynylbenzene-1,2-diol (CAS 366808-04-0)
- 3-Ethynylbenzene-1,2-diamine (CAS 61921-13-9)
- 4-Ethynylbenzene-1,2-diamine (CAS 58297-31-7)
- 1-Ethyl-2-ethynylbenzene (CAS 75659-49-3)
Recommended Standards
- 2-hydroxy-3-methoxy-2-methylpropanoic acid (CAS 672314-91-9)
- 2-Deoxy-D-xylose (CAS 5284-18-4)
- 2-hydroxy-3-methoxybutanoic acid (CAS 5405-44-7)
- 2-Deoxy-D-erythro-pentopyranose (CAS 35536-75-5)
- Nitisinone Impurity 2 (CAS 778-94-9)
- tert-Butyl (1-(2-amino-1-(4-chlorophenyl)ethyl)pyrrolidin-3-yl)carbamate (CAS 886365-23-7)
- Ethyl 3-bromo-1-ethyl-1H-indazole-6-carboxylate (CAS 1956380-11-2)
- 3-(2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoic acid (CAS 797756-39-9)
- 3,4-dihydropyrazino[2,1-c][1,2,4]thiadiazine-9-carboxylic acid 2,2-dioxide (CAS 793716-00-4)
- H-D-Val-Leu-Lys-pNA · 2 HCl (CAS 62354-43-2)
- N1-allyl-N3,N3-dimethylpropane-1,3-diamine (CAS 741634-83-3)
- (+)-2,3-O-Isopropylidene-D-glyceric Acid Methyl Ester (+)-Methyl 2,3-O-Isopropylidene-D-glycerate (R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxylic Acid Methyl Ester 52373-72-5 D2562 Methyl (R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxylate (CAS 52373-72-5)
- Cefadroxil Impurity 27 (CAS 55102-13-1)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
Why CATO?
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