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[ CAS No. 518-44-5 ] {[proInfo.proName]}

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Cat. No.: {[proInfo.prAm]}
Chemical Structure| 518-44-5
Chemical Structure| 518-44-5
Structure of 518-44-5 * Storage: {[proInfo.prStorage]}
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Product Details of [ 518-44-5 ]

CAS No. :518-44-5 MDL No. :MFCD00046931
Formula : C20H14O5 Boiling Point : -
Linear Structure Formula :- InChI Key :-
M.W : 334.32 Pubchem ID :-
Synonyms :

Safety of [ 518-44-5 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 UN#:N/A
Hazard Statements:H315-H319 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 518-44-5 ]

* 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 [ 518-44-5 ]

[ 518-44-5 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 2321-07-5 ]
  • [ 518-44-5 ]
YieldReaction ConditionsOperation in experiment
With ammonium hydroxide; zinc
With acetic acid; zinc
With sodium hydroxide; zinc
With sodium tetrahydroborate at 20℃; for 2h; borate buffer; 3 To 2 ml of a 1 mM solution of fluorescein (Sigma, prod. No. F-6377) in 0.1 M borate buffer, pH 8.5 was added approximately 5 mg of sodium borohydride. The mixture was shaken and left at room temperature for two hours. 40 microliters of the reduced solution was added to 960 //I of phosphate-buffered saline, pH 7.4. Figure 3A shows the spectrum of the reduced fluoroescein flourochrome, i.e. dihydrofluorescein (dotted line) which was recorded on a Hewlett-Packard diode array spectrophotometer. The spectrum of untreated fluorescein (solid line) was recorded by exactly the same procedure. The sample of diluted, reduced fluorochrome was gently oxidized in air and its spectrum recorded (dashed line). Figure 3B shows the formulas for fluorescein (fluorescent) and dihydrofluorescein (non-fluorescent).
Multi-step reaction with 3 steps 1: pyridine 2: acetic acid; zinc / Microwave irradiation 3: methanol; sodium hydroxide

  • 2
  • [ 518-44-5 ]
  • [ 108-24-7 ]
  • [ 35340-49-9 ]
YieldReaction ConditionsOperation in experiment
94% In pyridine Ambient temperature;
With pyridine Ambient temperature; Yield given;
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