Molecular Formula,C5H9NO4S
Molecular Weight,179.1904
Cas No,2387-59-9
Quality Standards:EP4, AJI92, BP98
Molecular Formula,C5H9NO4S
Molecular Weight,179.1904
Cas No,2387-59-9
Quality Standards:EP4, AJI92, BP98
CARBOCISTEIN
(S-Carboxymethyl-L-Cysteine)
Chemical Name: S-Carboxymethyl-L-Cysteine, Carbocistein
Structure Formula:
Molecular Formula: C5H9NO4S
Molecular Weight: 179.1904
Cas No: [2387-59-9]
Characteristics: White crystals or crystalline powder . Slighytly acid tast. Very slightly soluble in water, practically insoluble in ethanol and in gracial acetic acid and in ether. Dissolves in dilute hydrochloric acid and in sodium hydroxide T.S.
Quality Standards: EP4, AJI92, BP98
Items | Specification (EP4) | Specification (AJI92) | Specification (BP98) |
Description | White crystals or crystalline powder | ||
Identification | Infrared absorption spectrum | A; B; C; | |
Specific rotation | -3 2 .5 ° - -35.5 ° | -33.5 ° - -36.5 ° | -3 2 .5 ° - 35.5 |
State of solution (Transmittance) | Clear and colorless | ≥ 98.0% | Clear and colorless |
Chloride(Cl) | ≤ 0. 15 | ≤ 0.04% | ≤ 0. 15 |
Ammonium(NH4) | - - - - | ≤ 0.02% | - - - - |
Sulfate(SO4) | ≤ 0. 03 | ≤ 0.0 2 % | ≤ 0. 03 |
Iron(Fe) | - - - - | ≤ 30PPm | - - - - |
Heavy metals(Pb) | 0.001% | ≤ 10PPm | 0.001% |
Arsenic(As2O3) | - - - - | ≤ 1PPm | - - - - |
Other amino acids | - - - - | Conforms | - - - - |
Loss on drying | ≤ 0.5 % | ≤ 0. 30 % | ≤ 0.5 % |
Residue on ignition (Sulfated) | ≤ 0. 3 % | ≤ 0. 1 % | ≤ 0. 3 % |
PH | 2.0-3.0 | 2.0-3.5 | 2. 8-3.0 |
Assay | 98. 5-10 1 .0% | 98.5-101.0% | 98.5-101.0% |
L-cystine L-Cysteine | ≤ 0.5 % | - - - - | Ninhydrin-positive substances: ≤ 0.5 % |
Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well-closed containers, at controlled room temperature.
Recommended limit: 2 year.
Molecular Formula,C5H9NO4S
Molecular Weight,179.1904
Cas No,2387-59-9
Quality Standards:EP4, AJI92, BP98
