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56221-20-6

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56221-20-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56221-20-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,2,2 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 56221-20:
(7*5)+(6*6)+(5*2)+(4*2)+(3*1)+(2*2)+(1*0)=96
96 % 10 = 6
So 56221-20-6 is a valid CAS Registry Number.

56221-20-6Downstream Products

56221-20-6Relevant articles and documents

Heteropolyacid as an efficient catalyst for synthesis of 3,4-dihydro-1H-2,3-benzothiazine-2,2-dioxides

Canepa, Alicia S.,Sasiambarrena, Leandro D.,Bravo, Rodolfo D.

, p. 2655 - 2661 (2008/12/22)

A facile and efficient method for the formation of 3,4-dihydro-1H-2,3- benzothiazine 2,2-dioxides 2, compounds from benzylsulfonamides and formaldehyde is described using heteropolyacids H3PW12O40 and H3PMo12O40 supported on silica as catalysts. Copyright

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