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81822-46-0

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81822-46-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81822-46-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,2 and 2 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81822-46:
(7*8)+(6*1)+(5*8)+(4*2)+(3*2)+(2*4)+(1*6)=130
130 % 10 = 0
So 81822-46-0 is a valid CAS Registry Number.

81822-46-0Relevant articles and documents

Studies on 4(1H)-quinazolinones. 5. Synthesis and antiinflammatory activity of 4(1H)-quinazolinone derivatives

Ozaki,Yamada,Oine,Ishizuka,Iwasawa

, p. 568 - 576 (2007/10/02)

A number of new 4(1H)-quinazolinones were synthesized and evaluated in the carrageenin-induced paw edema test. Most of the compounds were obtained by the cyclization of the appropriately substituted anthranilamides with acid chlorides, followed by further chemical transformation. Structure-activity data suggest that 2-isopropyl-1-phenyl-, 2-cyclopropyl-1-phenyl-, and 1-isopropyl-2-phenyl-4(1H)-quinazolinones afford optimal potency and the presence of a halogen atom is preferred for activity. Adrenalectomy does not affect the antiinflammatory test results. The best result taking into account both efficacy and side effects was displayed by 1-isoproyl-(2-fluorophenyl)-4(1H)-quinazolinone.

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