We are manufacturer and can provide you with consistent quality Aztreonam Intermediates(80082-65-1).If you need please contact us without hesitation and we will reply at once. Chemical name:(2S-3S)-3-Amino-2-Methyl-4-Oxo-1-Azetidine sulfonic acid CAS No. :80082-65-1 Molecular formula:C4H8N2O4S Molecular weight:180.18 Appearance:White to off-white powder Specific Optical rotation:-41.7? Impurity:<1.5% Content:>98.5%(By HPLC)