| Company Name: |
Guangzhou PI PI Biotech Inc
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| Tel: |
020-81716320 +86-13602409664 |
| Email: |
Sales@pipitech.com |
| Products Intro: |
Product Name:Calcium Dobesilate Impurity I
CAS:7134-09-0
Purity:90%+ Package:10mg;USD|25mg;USD|50mg;USD
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| Company Name: |
Synchem OHG
|
| Tel: |
+49 5662 408730 |
| Email: |
info@synchem.de |
| Products Intro: |
Product Name:3,4-Dihydroxybenzenesulfonic acid
CAS:7134-09-0
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| Company Name: |
Shenzhen SUNGENING Bio-Medical Co., Ltd.
|
| Tel: |
0755-28967200 13631290199 |
| Email: |
wxf@sungening.com |
| Products Intro: |
Product Name:Calcium Dobesilate Hydrate Impurity 3
CAS:7134-09-0
Purity:99% HPLC or More Package:10MG;25MG;50MG;100MG
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4-sulfocatechol manufacturers
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| | 4-sulfocatechol Basic information |
| Product Name: | 4-sulfocatechol | | Synonyms: | 4-sulfocatechol;Calcium Dobesilate Hydrate Impurity 3;Benzenesulfonic acid, 3,4-dihydroxy-;Calcium Dobesilate Impurity I;Calcium Dobesilate Impurity 19 | | CAS: | 7134-09-0 | | MF: | C6H6O5S | | MW: | 190.17 | | EINECS: | | | Product Categories: | | | Mol File: | 7134-09-0.mol |  |
| | 4-sulfocatechol Chemical Properties |
| density | 1.743±0.06 g/cm3(Predicted) | | pka | -0.14±0.50(Predicted) |
| | 4-sulfocatechol Usage And Synthesis |
| Definition | ChEBI: A benzene ring substituted with a sulphonic acid group at position C-1, and hydroxy groups at C-3 and C-4. | | Synthesis | 0.3 mol of disodium 4-hydroxy-1,3- benzenedisulfonate is reacted with 1.2 mol of sodium hydroxide for 36 min at 340℃; the reaction mass is diluted with water, acidified with sulfuric acid, and boiled to remove sulfur dioxide; the product is extracted with ether. Yield 80%. Pyrocatechol is obtained by hydrolyzing the sulfonic acid group at 190 ℃. |
| | 4-sulfocatechol Preparation Products And Raw materials |
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