34255-08-8 Usage
Definition
ChEBI: A carotenoid ether that is (3E,3'E)-1,1'-dihydroxy-3,3',4,4'-tetradehydro-1,1',2,2'-tetrahydro-psi,psi-carotene in which both hydroxyl hydrogens are replaced by methyl groups.
Purification Methods
Spirilloxanthin crystallises from CHCl3/pet ether, acetone/pet ether, *C6H6/pet ether or *C6H6 as deep red spindle-like crystals. Purify it also by chromatography on a column of CaCO3/Ca(OH)2 mixture, Ca(OH)2 or deactivated alumina and elute it with a *C6H6/MeOH mixture. It gives a blue colour with SbCl3 in CHCl3 with at 642nm. [Polgar et al. Arch max Biochem Biophys 5 243 1944, Synthesis: Surmatis & Ofner J Org Chem 28 2735 1963, Karrer & Koenig Helv Chim Acta 23 460 1940.] Store it in the dark in an inert atmosphere at -20o. [Beilstein 1 III 2297, 1 IV 2750.]
Check Digit Verification of cas no
The CAS Registry Mumber 34255-08-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,5 and 5 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 34255-08:
(7*3)+(6*4)+(5*2)+(4*5)+(3*5)+(2*0)+(1*8)=98
98 % 10 = 8
So 34255-08-8 is a valid CAS Registry Number.
