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181486-70-4

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181486-70-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181486-70-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,4,8 and 6 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 181486-70:
(8*1)+(7*8)+(6*1)+(5*4)+(4*8)+(3*6)+(2*7)+(1*0)=154
154 % 10 = 4
So 181486-70-4 is a valid CAS Registry Number.

181486-70-4Downstream Products

181486-70-4Relevant articles and documents

The Synthesis of novel Polycyclic heterocyclic ring system via photocyclization. 18. Benzo[h]naphtho-[1′,2′:4,5]thieno[2,3-c]quinoline and benzo[h]naphtho-[1′,2′:4,5]thieno[2,3-c] [1,2,4]triazolo[4,3-a]quinoline

Luo, Jiann-Kuan,Federspiel, Ronald F.,Castle, Raymond N.

, p. 923 - 926 (1996)

The synthesis of two previously unknown polycyclic ring systems, benzo[h]naphtho[1′2′:4,5]-thieno[2,3-c]quinoline (1) and benzo[h]naphtho[1′,2′:4,5]thieno[2,3-c][1,2,4]triazolo[4,3-a] quinoline (2), was achieved via oxidative photocyclization of 1-chloro-N-(1-naphthyl)naphtho[2,1-b]thiophene-2-carboxamide (5). The total assignment of their 1H and 13C nmr spectra was determined by the concerted use of two-dimensional nmr methods.

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