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213275-21-9

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213275-21-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213275-21-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,2,7 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 213275-21:
(8*2)+(7*1)+(6*3)+(5*2)+(4*7)+(3*5)+(2*2)+(1*1)=99
99 % 10 = 9
So 213275-21-9 is a valid CAS Registry Number.

213275-21-9Downstream Products

213275-21-9Relevant articles and documents

Quinolone nucleosides: 6,7-dihalo-N-β- and α-glycosyl-1,4-dihydro-4- oxo-quinoline-3-carboxylic acids and derivatives. Synthesis, antimicrobial and antiviral activity

Al-Masoudi, Najim A.,Al-Soud, Yaseen A.,Ehrmann, Micheal,De Clercq, Erik

, p. 2255 - 2266 (2007/10/03)

Reaction of the silylated 6,7-dihaloquinoline bases 10-12 with 1-O- acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose (13) gave ethyl 7-chloro-6- flouro-1,4-dihydro-4-oxo-1-(2,3,5-tri-O-benzoyl-β-D- ribofuranosyl)quinoline-3-carboxylate (14) and the free acids

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