1256-21-9 Usage
General Description
The chemical (5R,6R)-5,6-Dihydro-5,6-dihydroxy-10'-apo-β,ψ-caroten-10'-oic acid methyl ester is a carotenoid compound with a complex structure containing a dihydroxy, dihydro group and a methyl ester. It is a derivative of β-carotene, a pigment commonly found in plants and fruits. Carotenoids are known for their antioxidant properties and have been linked to the prevention of certain diseases, including cancer and cardiovascular diseases. This specific compound may have potential applications in the food and pharmaceutical industries due to its unique structure and potential health benefits. Further research is needed to fully understand its properties and potential uses.
Check Digit Verification of cas no
The CAS Registry Mumber 1256-21-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,5 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1256-21:
(6*1)+(5*2)+(4*5)+(3*6)+(2*2)+(1*1)=59
59 % 10 = 9
So 1256-21-9 is a valid CAS Registry Number.
1256-21-9Relevant articles and documents
Synthesis of (+)-(5S,6S)-Azafrin Methyl Ester; Absolute Configuration of Aeginetic Acid and of Further Vicinal Apocarotene-diols
Eschenmoser, Walter,Uebelhart, Peter,Eugster, Conrad Hans
, p. 353 - 364 (2007/10/02)
We describe the synthesis of a series of optically active vicinal apo-β-carotene-diols.Thus, starting from (+)-(5S,6S)-5,6-dihydroxy-5,6-dihydro-β-ionone (2) we have prepared the (Z/E)-isomeric(+)-C15-esters 7 and 8, the (+)-retinoic derivatives 14, 15, 18, 19 and (+)-methyl azafrinate (22), the enantiomer of the naturally occuring compounds (s.Scheme 1).Our synthesis also establishes the absolute configuration of aeginetic acid (24), aeginetoside (25) and aeginetin (26), compounds isolated from the root parasite Aeginetia indica by Indian and Japanes workers (s.Scheme 2).The presented synthesis of optically active methyl azafrinate confirms our previous assignment of the absolute configuration of azafrin (1a), which was based on degradative evidence.