71-67-0 Usage
Chemical Properties
white crystalline solid
Uses
Sulfobromophthalein sodium salt hydrate is a reagent for the quantitative determination of proteins, a dye for liver diagnostics in vitro.
Definition
ChEBI: An organic sodium salt that is the disodium salt of bromosulfophthalein.
Purification Methods
Purify it by TLC on silica Gel G (Merck 250a particle size) in two solvent systems (BuOH/AcOH/H2O 30:7.5:12.5 v/v, and BuOH/propionic acid/H2O 30:20:7.5 v/v). When the solvent reaches a height of ~10cm, the plate is removed, dried in air and developed with NH3 vapour giving blue-coloured spots. Also, the dye can be chromatographed on MN Silica Gel with t-BuOH/H2O/n-BuOH (32:10:5 v/v) as eluent and visualised with a dilute KOH (or NaOH if the Na salt is required) spray. The product corresponding to bromosulfalein is scraped off and eluted with H2O, filtered and evaporated to dryness in a vacuum. It was dissolved in H2O and filtered through Sephadex G-25 and evaporated to dryness. [UV and IR identification: Barbier & DeVeerdt J Pharm Sci 57 819 1968, NMR: Kato et al. Chem Pharm Bull Jpn 20 581 1972, McGuire Anal Biochem 83 75 1977, Beilstein 18/9 V 461.]
Check Digit Verification of cas no
The CAS Registry Mumber 71-67-0 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 71-67:
(4*7)+(3*1)+(2*6)+(1*7)=50
50 % 10 = 0
So 71-67-0 is a valid CAS Registry Number.
InChI:InChI=1/C20H10Br4O10S2.2Na/c21-16-14(15(20(27)28)17(22)19(24)18(16)23)13(7-1-3-9(25)11(5-7)35(29,30)31)8-2-4-10(26)12(6-8)36(32,33)34;;/h1-6,25H,(H,27,28)(H,29,30,31)(H,32,33,34);;/q;2*+1/p-2/b13-8-;;
