68831-78-7 Usage
Purification Methods
Likely impurities are violaxanthin (see later) and mutatoxanthin (which contains a dihydrofuran ring derived from the epoxy group of antheraxanthin). Purify it by chromatography on columns of Ca(OH)2 and of ZnCO3. It crystallises from *C6H6/MeOH as needles or thin plates. Store it in the dark, under N2 or Ar at -20o. In CHCl3/SbCl2 it gives a blue colour with max at 587nm and gives a stable blue colour with conc HCl. [Karrer & Oswald Helv Chim Acta 18 1303 1935, Karrer & Jucker Helv Chim Acta 28 300
Check Digit Verification of cas no
The CAS Registry Mumber 68831-78-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,8,3 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 68831-78:
(7*6)+(6*8)+(5*8)+(4*3)+(3*1)+(2*7)+(1*8)=167
167 % 10 = 7
So 68831-78-7 is a valid CAS Registry Number.
68831-78-7Relevant articles and documents
PREPARATION OF MONO-CIS ANTHERAXANTHINS AND DETERMINATION OF THEIR GEOMETRICAL CONFIGURATION BY (13)C-NMR SPECTRAL ANALYSIS
Molnar, P.,Radics, L.,Szabolcs, J.
, p. 477 - 486 (2007/10/02)
Using (13)C-NMR methods, the stereochemistry of eight mono-cis carotenoids obtained by stereomutation of natural (3S, 5R, 6S, 3'R)- and semisynthetic (3S, 5S, 6R, 3'R)-all-trans-antheraxanthins has been established.The carbon-13 data support our earlier p
