| Company Name: |
Shanghai Haohong Pharmaceutical Co., Ltd.
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| Tel: |
400-8210725 4008210725 |
| Email: |
malulu@leyan.com |
| Products Intro: |
Product Name:8-Hydroxy-3-methyl-3,4-dihydro-1h-2-benzopyran-1-one
CAS:1200-93-7
Purity:97%
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| Company Name: |
TargetMol Chemicals Inc.
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| Tel: |
4008200310 |
| Email: |
marketing@tsbiochem.com |
| Products Intro: |
Product Name:(S)-(+)-ochracin
CAS:1200-93-7
Purity:98% Package:10 mg;100 mg;25 mg;5 mg;50 mg
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| | (+/-)-MELLEIN Basic information |
| Product Name: | (+/-)-MELLEIN | | Synonyms: | (+/-)-MELLEIN;(±)-3,4-Dihydro-8-hydroxy-3-methyl-2-benzopyran-1-one;1H-2-Benzopyran-1-one, 3,4-dihydro-8-hydroxy-3-methyl-;(S)-(+)-ochracin | | CAS: | 1200-93-7 | | MF: | C10H10O3 | | MW: | 178.18 | | EINECS: | | | Product Categories: | | | Mol File: | 1200-93-7.mol |  |
| | (+/-)-MELLEIN Chemical Properties |
| Melting point | 37-39 °C | | Boiling point | 392.7±42.0 °C(Predicted) | | density | 1.252±0.06 g/cm3(Predicted) | | storage temp. | 2-8°C | | pka | 9.86±0.40(Predicted) |
| | (+/-)-MELLEIN Usage And Synthesis |
| Definition | ChEBI: Mellein is an isochromane that is 3,4-dihydroisocoumarin bearing methyl and hydroxy substituents at positions 3 and 8 respectively. It is functionally related to an isocoumarin. | | Purification Methods | Purify it by recrystallisation from H2O or aqueous EtOH. It has UV: at 247 and 314nm. [Arakawa et al. Justusmax Liebigs Ann Chem 728 152 1969, Blair & Newbold Chem Ind (London) 93 1955, J Chem Soc 2871 1955.] The methyl ether has m 66-67o and UV: 242nm ( 7,400) and 305nm ( 4,600). R(-)-Mellein has m56o(aqueous Me2CO), [] D -102.5o (c 1, CHCl3) and R(+)-mellein has m 56-57o(hexane), [] D +102o (c 1, CHCl3) or [] 25 +88o (c 1, MeOH). [Beilstein 18 III/IV 188, 18/1 V 274.] |
| | (+/-)-MELLEIN Preparation Products And Raw materials |
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