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25279-26-9

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25279-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25279-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,2,7 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 25279-26:
(7*2)+(6*5)+(5*2)+(4*7)+(3*9)+(2*2)+(1*6)=119
119 % 10 = 9
So 25279-26-9 is a valid CAS Registry Number.

25279-26-9Relevant articles and documents

Method for production of rare carotenoids from commercially available lutein

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Page/Page column 16, (2008/06/13)

Disclosed are processes for conversion of (3R,3′R,6′R)-lutein to (3R,6′R)-α-cryptoxanthin, (3R)-β-cryptoxanthin, anhydroluteins I, II, and III (dehydration products of lutein), and a method for separating and purifying the individual carotenoids including the unreacted (3R,3′R)-zeaxanthin. The invention also includes two methods that transform (3R,3′R,6′R)-lutein into (3R,6′R)-α-cryptoxanthin in excellent yields.

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