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Chemical Structure| 660823-32-5 Chemical Structure| 660823-32-5

Structure of 660823-32-5

Chemical Structure| 660823-32-5

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Product Details of [ 660823-32-5 ]

CAS No. :660823-32-5
Formula : C8H5N3O4
M.W : 207.14
SMILES Code : O=C(C1=NNC2=C1C=CC=C2[N+]([O-])=O)O
MDL No. :MFCD07378941

Safety of [ 660823-32-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 660823-32-5 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 660823-32-5 ]

[ 660823-32-5 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 660823-32-5 ]
  • [ 78155-76-7 ]
  • [ 109903-35-7 ]
  • [ 660412-02-2 ]
  • C16H15N5O5S [ No CAS ]
YieldReaction ConditionsOperation in experiment
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In DMF (N,N-dimethyl-formamide); at 20 - 70℃; for 50h; To the [NITRO-LH-INDAZOLE-3-CARBOXYLIC] acid (1 equiv. ) of Example 63A in DMF (0.3 M) was added EDC (1.2 equiv. ), HOBT (1.2 equiv. ), NMM (1.2 equiv. ) and then 4- [METHYLSULPHAMOYLMETHYL-PHENYLAMINE] (1.3 equiv. ) at room temperature. The reaction was heated to [70 C] for 2 hours and then stirred at room temperature for 48 hours. Water was added to the reaction mixture and the precipitated product was filtered. The solid was washed with water, then a small volume [OF MEOH,] and then dried in a vacuum oven to leave a yellow solid.
  • 2
  • [ 660823-32-5 ]
  • [ 78155-76-7 ]
  • [ 371-40-4 ]
  • 5-nitro-1H-indazole-3-carboxylic acid (4-fluorophenyl)amide [ No CAS ]
  • 7-nitro-1H-indazole-3-carboxylic acid (4-fluorophenyl)amide [ No CAS ]
YieldReaction ConditionsOperation in experiment
82% With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In DMF (N,N-dimethyl-formamide); for 72h; To a solution [OF 5-NITRO-LH-INDAZOLE-3-CARBOXYLIC] acid (Example 17A) (6.5 g, 31.5 mmol, 1.0 equiv) in DMF (200 ml) was added 4-fluoroaniline (33.3 ml 34.6 mmol, 1.1 equiv), HOBt (5.1 g, [37.] 7 mmol, 1.2 equiv) and EDC (7.2 g, 37.7 mmol, 1.2 equiv). The mixture was stirred for a period of 72 hours. The solvent was removed under reduced pressure and the resulting solid suspended in ethyl acetate and aqueous sodium hydrogen carbonate. The precipitate was collected, resuspended in aqueous sodium hydrogen carbonate and stirred for 10 mins. The solid was collected and dried in a vacuum oven to afford the title compound (7.77 g, 82%) as a 8: 2 mixture with the 7-nitro isomer; LCMS 3.83 min, [M/Z] [M+H] [+] 300.
  • 3
  • [ 4498-67-3 ]
  • [ 660823-32-5 ]
  • [ 78155-76-7 ]
YieldReaction ConditionsOperation in experiment
With sulfuric acid; potassium nitrate; at 0 - 20℃; To a suspension of indazole-3-carboxylic acid (Fluka) (5 g, [31MMOL)] in concentrated H2SO4 (30 ml) at [0 C] was added [KN03] (3.13 g, 31 mmol). The reaction was allowed to stir overnight at room temperature, then diluted with water and the products extracted with ethyl acetate. The combined organic layers were washed with brine and then dried over [MGS04.] Evaporation to dryness left the product as a yellow solid as a 7: 3 mixture with the 7-nitro isomer ; LCMS 2.58 min, [M/Z] [[M+H]] + 208.EXAMPLE 63; [5- [3-(2-CHLORO-ETHYL)-UREIDO]-LH-INDAZOLE-3-CARBOXYLIC] acid (4- methylsulphamoylmethyl-phenyl)-amide; 63A. PREPARATION OF 5-NITRO-LH-INDAZOLE-3-CARBOXYLIC] acidTo a suspension of indazole-3-carboxylic acid (Fluka) (5 g, [31MMOL)] in concentrated [H2SO4] (30 ml) at [0 C] was added [KNO3] (3.13 g, 31 mmol). The reaction was allowed to stir overnight at room temperature, then diluted with water and the products were extracted with ethyl acetate. The combined organic layers were washed with brine and then dried over [MGS04.] Evaporation to dryness left the product as a yellow solid as a 7: 3 mixture with the 7-nitro isomer ; LCMS 2.58 min, [M/Z] [M+H] + 208.
With sulfuric acid; potassium nitrate; at 0 - 20℃; EXAMPLE 13 PREPARATION OF 5-MORPHOLIN-4-VL-LH-INDAZOLE-3-CARBOXYLIC acid phenylamide 13A. Preparation of 5-Nitro-1H-indazole-3-carboxylic acid; To a suspension of indazole-3-carboxylic acid (Fluka) (5 g, 31MMOL) in concentrated HAIS04 (30 ml) at 0 C was added KN03 (3.13 g, 31 mmol). The reaction was allowed to stir overnight at room temperature, then diluted with water and the products extracted with ethyl acetate. The combined organic layers were washed with brine and then dried over MGS04. Evaporation to dryness left the product as a yellow solid as a 7: 3 mixture with the 7-nitro isomer; LCMS 2.58 min, M/Z [M+H] + 208.
  • 4
  • [ 67-56-1 ]
  • [ 660823-32-5 ]
  • [ 78155-76-7 ]
  • [ 1360893-27-1 ]
  • [ 78155-75-6 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride;Heating / reflux; To a suspension of the carboxylic acid [1A] (2.5 g, 12.1 mmol) in methanol (40 [ML)] was added concentrated hydrochloric acid (3 drops). The reaction was heated to reflux overnight. The reaction was allowed to cool to room temperature. The solid was filtered and dried in a vacuum oven to leave a yellow solid; LCMS 3.30 min, [MLZ] [M+H] [+] 222 and [MLZ] [2M+H] + 443.
 

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