Sulfadoxine

May be stored at 4 °C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20 °C. Aliquots are stable for at least 12 months at -20 °C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Cross-Reactivity: Sulphadoxine 100; Acetyl-sulphadoxine 218; Sulphadimethoxine <0.1; Sulphathiazole <0.1; Sulphamoxole <0.1; Sulphamethoxazole <0.1; Sulphadiazine <0.1; Sulphamethazine <0.1; Sulphapyridine <0.1; Sulphaquinoxaline <0.1; Sulphaguanidine <0.1; Sulphamerazine <0.1; Sulphanilamide <0.1.