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74308-05-7

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74308-05-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74308-05-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,0 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74308-05:
(7*7)+(6*4)+(5*3)+(4*0)+(3*8)+(2*0)+(1*5)=117
117 % 10 = 7
So 74308-05-7 is a valid CAS Registry Number.

74308-05-7Relevant articles and documents

THERMAL CYCLOCONDENSATIONS OF 3-N(4- AND 5-BENZIMIDAZOLYL AND BENZTRIAZOLYL)AMINO DERIVATIVES OF 2-PROPENOIC ACID

Milata, Viktor,Ilavsky, Dusan

, p. 2918 - 2925 (2007/10/02)

The cyclization of 3-N-(4- and 5-benzimidazolyl and benztriazolyl)amino-2-cyano- and 2-ethoxycarbonyl-2-propenoate esters Ia,b-IVa,b under the conditions of the Gould-Jacobs reaction leads to angularly ring-fused substituted imidazo or triazolo (V, VI) and (VII, VIII) quinolines, respectively.The esters Vb-VIIIb have been transformed into the corresponding chloroderivatives Vc-VIIIc. 3-N(5-Benzimidazolyl and 5-benztriazolyl)amino-2-cyano-2-propenenitriles are cyclized in the presence of aluminium(III) chloride to give the aminoquinolines Vd, VId.The structure of the products has been characterized by their 1H, 13C NMR, IR, and UV spectra.

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