Ectoin (S)-2-methyl-3,4,5,6-tetrahydropyrimidine-4-carboxylic acid CAS:96702-03-3
Name:Ectoin
Systematic name:(S)-2-methyl-3,4,5,6-tetrahydropyrimidine-4-carboxylic acid
Synonyms:Ectoine,Ecotoin.
CAS:96702-03-3
EINECS:431-910-1
MF: C6H10N2O2
MW:142.16 g/mol
Ectoine is a natural, highly-soluble,small molecule, zwitterionic cyclic amino acid derivative, present in some species of extremophilic microorganisms. It is a compatible solute, which serves to stabilize the physiological properties of the cells and protect them from external osmotic stress, caused by high salinity, heat, loss of water and UV irradiation.
white powder or crystalline powder
Relative density:1.568 g/cm³(20oC)
Water solubility:390g/L(25oC)
Surface tension(20oC):69.4 mN/m(0.1% solution,v/v)
Test item |
Specification |
Appearance |
Offwhite or White crystalline powder or powder |
Specific rotation |
+139o~+145o |
Identification(IR) |
Conforms to that of standard |
PH |
6-8 |
Transmittance of solution(@430nm) |
98%min |
Chloride |
0.03% max |
Sulfaet |
0.02% max |
Ammonium salt |
0.02% max |
Loss on drying |
0.2% max |
Residue on ignition |
0.1% max |
Fe |
0.001% max |
Heavy metal |
10 ppm max |
Arsenic |
1 ppm max |
Total count of bacteria |
100 CFU/g max |
Mold and yeast |
50 CFU/g max |
Staphylococcus aureus(CFU/g) |
N.D |
E.Coli(CFU/g) |
N.D |
Candida albicans(CFU/g) |
N.D |
Salmonella(CFU/10g) |
N.D |
Assay(HPLC) on dry basis |
98.0% min |
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