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149220-87-1

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149220-87-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149220-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,2,2 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 149220-87:
(8*1)+(7*4)+(6*9)+(5*2)+(4*2)+(3*0)+(2*8)+(1*7)=131
131 % 10 = 1
So 149220-87-1 is a valid CAS Registry Number.

149220-87-1Relevant articles and documents

NOVEL SULFONAMIDOMETHYLPHOSPHONATE INHIBITORS OF BETA-LACTAMASE

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Page/Page column 61-62, (2008/06/13)

This invention provides novel β-lactamase inhibitors of the aryl-and heteroaryl-sulfonamidomethylphosphonate monoester class. The compounds inhibit three classes of β-lactamases and synergize the antibacterial effects of β-lactam antibiotics (e.g., imipenem and ceftazimdime) against those micro-organisms normally resistant to the β-lactam antibiotics as a result of the presence of the β-lactamases. Formula (I) or a pro-drug or pharmaceutically acceptable salt thereof, wherein: W represents: Formula (II).

Syntheses of the acridone alkaloid citrusinine-I and its derivatives

Kato,Fujita,Fujimura,Kawashima,Nishiyama

, p. 445 - 452 (2007/10/02)

Citrusinine-I (1), a naturally occurring acridone alkaloid with potent antiviral activity, was synthesized for the first time, via a route involving Ullmann reaction, cyclization, and selective demethylation at the 1-position with boron trifluoride etherate and lithium bromide. 1,5,6-Trihydroxy-3-methoxy-9(10H)-acridone (2a) and 1,5,6-trihydroxy-3-methoxy-10-methyl-9(10H)-acridone (2b) were also synthesized.

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