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131981-33-4

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131981-33-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131981-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,8 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131981-33:
(8*1)+(7*3)+(6*1)+(5*9)+(4*8)+(3*1)+(2*3)+(1*3)=124
124 % 10 = 4
So 131981-33-4 is a valid CAS Registry Number.

131981-33-4Downstream Products

131981-33-4Relevant articles and documents

Enzyme-Mediated Regioselective Acylations of Flavonoid Disaccharide Monoglycosides

Danieli, Bruno,De Bellis, Paolo,Carrea, Giacomo,Riva, Sergio

, p. 1837 - 1844 (2007/10/02)

Flavonoid disaccharide monoglycosides have been acylated by the catalytic action of the protease subtilisin in anhydrous pyridine.The effects of the nature of the sugars and of the interglycosidic bonds on the regioselectivity of the reactions have been a

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