Furosemide is a loop diuretic inhibitor of NKCC (Na+/2Cl-/K+) cotransporter. Furosemide acts as a non-competitive antagonist at GABAA receptors with ~ 100-fold greater selectivity for α6-containing receptors than α1-containing receptors.
Function
Furosemide, sold under the brand name Lasix among others, is a medication used to treat fluid build-up due to heart failure, liver scarring, or kidney disease. It may also be used for the treatment of high blood pressure.
Application
Furosemide is primarily used for the treatment of hypertension and edema. It is the first-line agent in most people with edema caused by congestive heart failure. It is also used for hepaticcirrhosis, renal impairment, nephrotic syndrome, in adjunct therapy for cerebral or pulmonary edema where rapid diuresis is required (IV injection), and in the management of severe hypercalcemia in combination with adequate rehydration.
Specification
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Items of Test
Standard
Result of Test
Appearance
White to slightly yellow,odorless crystalline powder
Conforms
Solubility
Particularly insoluble in water,freely soluble in acetone,in dimethylformamide,and in solutions of alkali hydroxides,soluble in methanol,sparingly soluble in alcohol,slightly soluble in ether,very slightly soluble in chloroform.
Conforms
Identification
A
The absorption IR of the raw materials is accordant to of the standard.
Conform
B
Absorptivities at 271nm, do not differ by more than 3.0%
Conform
C
Should be conform
Conform
Loss on drying
≤0.5%
0.22%
Chloride
≤0.02%
Conforms
Sulfate
≤0.03%
Conforms
Heavy metal
≤20ppm
Conforms
Free primang aromatic amine
≤0.12%
0.09%
Sulphated ash
≤0.1%
Conforms
Residual solvents
Should be
confor
m
Conforms
Assay
≥99.0%
99.76%
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