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58-27-5 2-Methyl-1,4-naphthoquinone | 
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| Chemical Name | 2-Methyl-1,4-naphthoquinone | 
| Synonyms | Menadione (1.05793);Vitamin K2(0);Vitamin K3;menaphthone;Menadione;Vitamin K_3;2-Methyl-1,4-dihydronaphthalene-1,4-dione | 
| Molecular Formula | C11H8O2 | 
| Molecular Weight | 172.18 | 
| InChl | InChI=1/C11H8O2/c1-7-6-10(12)8-4-2-3-5-9(8)11(7)13/h2-6H,1H3 | 
| CAS Registry Number | 58-27-5 | 
| EINECS | 200-372-6 | 
| Molecular Structure | ![]()  | 
			    
| Melting Point | 105-108℃ | 
| Water Solubility | INSOLUBLE | 
| Hazard Symbols | |
| Risk Codes | R22||R36/37/38||R43:; | 
			    
| Safety Description | S24||S26||S37/39:; | 
			    
| MSDS | |