ChemicalBook >> CAS DataBase List >>(+/-)-MELLEIN
(+/-)-MELLEIN
- CAS No.
- 1200-93-7
- Chemical Name:
- (+/-)-MELLEIN
- Synonyms
- (+/-)-MELLEIN;(+/-)-MELLEIN;(S)-(+)-ochracin;(±)-3,4-Dihydro-8-hydroxy-3-methyl-2-benzopyran-1-one;1H-2-Benzopyran-1-one, 3,4-dihydro-8-hydroxy-3-methyl-
- CBNumber:
- CB6502748
- Molecular Formula:
- C10H10O3
- Molecular Weight:
- 178.18
- MDL Number:
- MFCD00142319
- MOL File:
- 1200-93-7.mol
Last updated:2023-05-04 17:34:32
| 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) |
| FDA UNII | Y30Y67M5SV |
SAFETY
Risk and Safety Statements
| Safety Statements | 22-24/25 |
|---|---|
| WGK Germany | 3 |
(+/-)-MELLEIN Chemical Properties,Uses,Production
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
Raw materials
Preparation Products
(+/-)-MELLEIN Suppliers
Global( 16)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Haohong Pharmaceutical Co., Ltd. | 400-8210725 4008210725 | malulu@leyan.com | China | 40036 | 58 |
| TargetMol Chemicals Inc. | 4008200310 | marketing@tsbiochem.com | China | 24018 | 58 |
| TargetMol Chemicals Inc. | 15002134094 | marketing@targetmol.com | China | 24246 | 58 |
| Shaanxi Xihua Chemical Industry Co., Ltd | 029-81122149 13992773979 | 1088@dideu.com | China | 775 | 58 |
| Supplier | Advantage |
|---|---|
| Shanghai Haohong Pharmaceutical Co., Ltd. | 58 |
| TargetMol Chemicals Inc. | 58 |
| TargetMol Chemicals Inc. | 58 |
| Shaanxi Xihua Chemical Industry Co., Ltd | 58 |
(+/-)-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
(+/-)-MELLEIN
1200-93-7