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81609-16-7

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81609-16-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81609-16-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,0 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81609-16:
(7*8)+(6*1)+(5*6)+(4*0)+(3*9)+(2*1)+(1*6)=127
127 % 10 = 7
So 81609-16-7 is a valid CAS Registry Number.

81609-16-7Relevant articles and documents

Reduction of 3-aminoquinoline-2,4(1H,3H)-diones and deamination of the reaction products

Klásek, Antonín,Ly?ka, Antonín,Rouchal, Michal,Rudolf, Ond?ej,R??i?ka, Ale?

, p. 595 - 612 (2014/06/09)

3-Aminoquinoline-2,4-diones were stereoselectively reduced with NaBH 4 to give cis-3-amino-3,4-dihydro-4-hydroxyquinolin-2(1H)-ones. Using triphosgene (=bis(trichloromethyl) carbonate), these compounds were converted to 3,3a-dihydrooxazolo[4,5-

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