173422-82-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173422-82-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,4,2 and 2 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 173422-82:
(8*1)+(7*7)+(6*3)+(5*4)+(4*2)+(3*2)+(2*8)+(1*2)=127
127 % 10 = 7
So 173422-82-7 is a valid CAS Registry Number.
173422-82-7Relevant articles and documents
METHOD FOR PRODUCING ASTAXANTHIN ESTERS
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Paragraph 0121, (2017/11/14)
The invention describes an environmentally friendly, sustainable and cost-effective method for preparing astaxanthin diesters of the formula 1, in which astaxanthin of the formula 2 is doubly esterified with fatty acid chlorides of the general formula 3.
