We are offering 1-butane sulfonic acid sodium salt cas no. 2386-54-1 for ion-pair chromatography molecular formula : c4h9nao3s molecular weight: 160.16 assay (t) 99% transmission (0.005 moleslit) : wavelength in mm 200 220 250 min. Transmission 70% 90% 98% un no. Nr hs code : 2904 10 00 s : 22-2425