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CAS 604-50-2 1-methylquinazoline-2,4(1H,3H)-dione Supply & Price list
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Sodium cyanate (28mmol) in water (25mL) was added to a solution of N-methyl anthranilic acid (20mmol) and acetic acid (0.2mL) in water (50mL) with stirring. When the temperature of the reaction mixture reached 40°C, NaOH was added in portions till the reaction temperature reach to 75°C. Stirring was continued without cooling for 4h, after which the crystals were filtered off and dissolved in boiling water (50mL). The solution was acidified with 50percent HSodium cyanate (30.15 g, 0.46 mol) was added to a slurry of N- methylanthranilic acid (50.0 g, 0.33 mol) in water (1 .75 L) and acetic acid (3.3 mL). The reaction mixture was heated to 50 °C for 1 h. The solution was slowly basified by the addition of sodium hydroxide (exothermic). The resulting solution was heated to 80 °C and stirred overnight. The reaction mixture was cooled to 0 2-(Methylamino)benzoic acid (4.50 g, 0.0300 mol) and acetic acid (0.3 mL) were dissolved in water (158 mL), a solution of sodium isocyanate (2.76 g, 42.0 mmol) in water (54 mL) was added slowly at room temperature. To a stirred mixture of Methyl /V-Methyl anthranilate (1 .46 mL, 10 mmol) in glacial acetic acid (10 mL) was added KOCN (975 mg, 12 mmol) in 3 mL of HUrea (460 mmol) was heated to melt, then 2-methylaminobenzoic acid (46 mmol) was added.
Synonyms
1,2,3,4-Tetrahydro-1-methyl-2,4-dioxoquinazoline; 1-Methyl-1,2,3,4-tetrahydroquinazoline-2,4-dione; 1-Methyl-1H-quinazoline-2,4-dione; 1-Methyl-2,4(1H,3H)-quinazolinedione; 1-methyl-2,4(1H,3H)-quinazolinedione(SALTDATA: FREE);EncyclopediaDictionaryCAS No. 604-50-2 Formula C9H8N2O2 Molecular Weight 176.17202 EINECS CID 11788 Density 1.292 Melting Point 237.5 °C
1-methylquinazoline-2,4(1H,3H)-dione Cas 604-50-2 supplier list
: 2 results-
Regional
- China
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Business Type
- Manufacturer
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Purity
- 98%~99%
- <=80%
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Unit
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- 1-Methyl-2,4(1H,3H)-quinazolinedione
- Description:1-Methyl-2,4(1H,3H)-quinazolinedione Updatetime:Sep 14 2014
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- 2,4(1H,3H)-Quinazolinedione,1-methyl-
- Purity:99% Appearance:detailed see specifications Packaging:25kg/drum;200kg/drum Description:Superiority 2,4(1h,3h)-quinazolinedione,1-methyl- Details 2,4(1h,3h)-quinazolinedione,1-methyl- Molecular Formula:C9H8N2O2 Transportation:Sea/air/courier Storage:Keep away of light, cool place Keywords:604-50-2 supplier,2,4(1H,3H)-Quinazolinedione,1-methyl- su... Updatetime:Feb 24 2019
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