1,4-Benzodioxan-2-carboxylic acid
- CAS No.
- 3663-80-7
- Chemical Name:
- 1,4-Benzodioxan-2-carboxylic acid
- Synonyms
- 2,3-dihydrobenzo[b][1,4]dioxine-2-carboxylic acid;Doxazosin EP IMpurity A;RX 811056;AKOS AUF2101;BUTTPARK 36\04-47;AKOS BBS-00006546;RARECHEM AL BO 1613;1,4-Benzodioxan-2-ca;Doxazosin Impurity 3;Doxazosin iMpurity A
- CBNumber:
- CB5222957
- Molecular Formula:
- C9H8O4
- Molecular Weight:
- 180.16
- MDL Number:
- MFCD00084888
- MOL File:
- 3663-80-7.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 126-130 °C(lit.) |
|---|---|
| Boiling point | 347.2±41.0 °C(Predicted) |
| Density | 1.379±0.06 g/cm3(Predicted) |
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| form | Solid |
| pka | 2.69±0.20(Predicted) |
| color | White to Off-White |
| Water Solubility | 7.63g/L at 20℃ |
| λmax | 282nm(MeOH)(lit.) |
| InChI | InChI=1S/C9H8O4/c10-9(11)8-5-12-6-3-1-2-4-7(6)13-8/h1-4,8H,5H2,(H,10,11) |
| InChIKey | HMBHAQMOBKLWRX-UHFFFAOYSA-N |
| SMILES | O1C2=CC=CC=C2OCC1C(O)=O |
| LogP | 0.5 at 20℃ |
| CAS DataBase Reference | 3663-80-7(CAS DataBase Reference) |
| FDA UNII | T9Z56HV1B0 |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H318 | |||||||||
| Precautionary statements | P264-P270-P280-P301+P312-P305+P351+P338-P501 | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 24/25 | |||||||||
| WGK Germany | 3 | |||||||||
| Hazard Note | Irritant | |||||||||
| HS Code | 29329990 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Eye Dam. 1 |
|||||||||
| REACH Registrations | Inactive | |||||||||
| NFPA 704 |
|
1,4-Benzodioxan-2-carboxylic acid price More Price(67)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | PHR3312 | Doxazosin Related Compound D certified reference material, pharmaceutical secondary standard | 3663-80-7 | 50MG | $668 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1225463 | Doxazosin Related Compound D United States Pharmacopeia (USP) Reference Standard | 3663-80-7 | 20mg | $1550 | 2026-04-30 | Buy |
| Sigma-Aldrich | 561371 | 1,4-Benzodioxan-2-carboxylic acid 97% | 3663-80-7 | 25G | $262 | 2022-05-15 | Buy |
| TCI Chemical | B3406 | 1,4-Benzodioxane-2-carboxylic Acid >98.0%(GC)(T) | 3663-80-7 | 5g | $27 | 2026-04-30 | Buy |
| TCI Chemical | B3406 | 1,4-Benzodioxane-2-carboxylic Acid >98.0%(GC)(T) | 3663-80-7 | 25g | $122 | 2026-04-30 | Buy |
1,4-Benzodioxan-2-carboxylic acid Chemical Properties,Uses,Production
Chemical Properties
White To Off-White Solid
Uses
These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Flammability and Explosibility
Not classified
Synthesis
3663-82-9
3663-80-7
The general procedure for the synthesis of 4-benzodioxane-2-carboxylic acid from (2,3-dihydrobenzo[b][1,4]dioxohexen-2-yl)methanol was carried out as follows: (2,3-dihydrobenzo[b][1,4]dioxohexen-2-yl)methanol was accurately weighed and dissolved in 0.3 N aqueous KOH (1.3 equiv). Potassium permanganate (KMnO4, 2.0 eq.) was slowly added under ice bath conditions at 0 °C. The reaction mixture was stirred at low temperature for about 10 minutes and then transferred to room temperature to continue stirring overnight. Upon completion of the reaction, the organic phase was extracted with dichloromethane and subsequently washed with water. The organic phase was dried over anhydrous sodium sulfate and concentrated under reduced pressure to give a white solid as the crude product of 4-benzodioxane-2-carboxylic acid. The crude product was purified by silica gel fast column chromatography, and the final pure product was obtained in 92.5% yield.
References
[1] Patent: CN105985328, 2016, A. Location in patent: Paragraph 0063; 0071; 0072
1,4-Benzodioxan-2-carboxylic acid Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Zhengzhou HongSheng Pharmaceutical Co., Ltd. | 0371-0371-13526885213 15637198702 | hsyykjchem@163.com | China | 1856 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Accela ChemBio Co.,Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 10972 | 64 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
View Lastest Price from 1,4-Benzodioxan-2-carboxylic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2025-04-04 | 1,4-Benzodioxan-2-carboxylic acid
3663-80-7
|
1KG | 98% | 1ton | Henan Aochuang Chemical Co.,Ltd. | ||
 |
2024-07-15 | 1,4-Benzodioxan-2-carboxylic acid
3663-80-7
|
$1.00 | 1KG | 99% | 20t | Shaanxi Dideu Medichem Co. Ltd | |
 |
2024-04-12 | 1,4-Benzodioxan-2-carboxylic acid
3663-80-7
|
1kg | 99% | 2000ton | Shaanxi Haibo Biotechnology Co., Ltd |
-
- 1,4-Benzodioxan-2-carboxylic acid
3663-80-7
- 98%
- Henan Aochuang Chemical Co.,Ltd.
-
- 1,4-Benzodioxan-2-carboxylic acid
3663-80-7
- $1.00
- 99%
- Shaanxi Dideu Medichem Co. Ltd
-
- 1,4-Benzodioxan-2-carboxylic acid
3663-80-7
- $0.00
- 99%
- Shaanxi Haibo Biotechnology Co., Ltd
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