White crystals or crystalline powder; strongly acid taste.
Freely soluble in water.
Soluble in ethanol, practically insoluble in ether.
Solubility(H2O, g/100g):17(20°),80(40°),260(60°)
Biological reagents, bulk drugs, the sulfhydryl group (-SH) contained in the molecule can break the disulfide chain (-S-S) that connects the mucin peptide chain in mucus sputum. Mucin becomes a peptide chain of small molecules, which reduces the viscosity of sputum; it can also break DNA fibers in purulent sputum, so it can not only dissolve white viscous sputum but also purulent sputum. It is used in biochemical research, as a phlegm solubilizer and an antidote for acetaminophen poisoning in medicine. The mechanism of action is that the sulfhydryl group contained in the product’s molecular structure can break the disulfide bond in the mucin polypeptide chain in mucinous sputum, decompose the mucin, reduce the viscosity of the sputum, and make it liquefied and easy to cough up. It is suitable for patients with acute and chronic respiratory diseases whose sputum is thick and difficult to cough up, as well as a large number of sticky sputum blockages that cause severe symptoms due to difficulty in sucking
Antioxidants,antidote and mucus decomposing agents inhibit HIV replication; serve as substrates for microsomal glutathione transferases,treat chronic broncitis and dissolve white viscous sputum,etc .
|
Item |
Specification |
Test result |
|
Appearance |
White, crystalline powder, having a slight acetic odor |
Conforms |
|
Specific Rotation〔α〕D20 |
+21.3° to +27.0° |
+23.6° |
|
Chloride (Cl) |
Not more than 0.04% |
< 0.04% |
|
Ammonium (NH4) |
Not more than 0.02% |
< 0.02% |
|
Sulfate (SO4) |
Not more than 0.030% |
< 0.020% |
|
Iron (Fe) |
Not more than 20ppm |
< 10ppm |
|
Heavy metals ( Pb), |
Not more than 10ppm |
< 10ppm |
|
Arsenic (As2O3) |
Not more than 1ppm |
< 1ppm |
|
Other amino acid |
Chromatographically
Not detectable
|
Conforms |
|
Loss on Drying |
Not more than 0.50% |
0.13% |
|
Residue on ignition(sulfated) |
Not more than 0.20% |
0.05% |
|
Assay |
98.5 to 101.0% |
99.66% |
|
pH |
2.0 to 2.8 |
2.2 |
|
Melting point |
106 to 110ºC |
108 to 109ºC |
|
Conclusion: The product conforms to the specification of AJI92 standards. |
||
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