Cas 1098337-03-1,4-anilino-5-fluoroquinazoline-2-thiol

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Check Digit Verification of cas no

The CAS Registry Mumber 1098337-03-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,9,8,3,3 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1098337-03:
(9*1)+(8*0)+(7*9)+(6*8)+(5*3)+(4*3)+(3*7)+(2*0)+(1*3)=171
171 % 10 = 1
So 1098337-03-1 is a valid CAS Registry Number.

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1098337-03-1Relevant articles and documents

Synthesis of 5-and 7-fluoroquinazolin-4(1H)-ones

Layeva,Nosova,Lipunova,Trashakhova,Charushin

, p. 1821 - 1827 (2008/09/19)

5-Fluoroquinazoline-2,4-diones and their 2-thio analogs were obtained from 6-fluoroanthranilic acid. Two convenient routes to 5-fluoroquinazolin-4-ones involved cyclocondensation of 6-fluoroanthranilamide with acid chlorides (anhydrides) or with aromatic (heterocyclic) aldehydes. A method for the synthesis of 7-fluoroquinazolin-4-one from 2,4-difluorobenzoic acid was proposed.

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1098337-03-1