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17617-25-3

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17617-25-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17617-25-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,1 and 7 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 17617-25:
(7*1)+(6*7)+(5*6)+(4*1)+(3*7)+(2*2)+(1*5)=113
113 % 10 = 3
So 17617-25-3 is a valid CAS Registry Number.

17617-25-3Upstream product

17617-25-3Relevant articles and documents

Synthesis of 6,7-dihydrodibenzo[b,j]phenanthroline derivatives by pfitzinger condensation of isatin and cyclic diketones

Fang, Lizhen,Ma, Jinshuo,Lu, Chenjuan,Li, Huanhuan,Yang, Xiaoli

, p. 209 - 215 (2014/02/14)

All two kinds of 6,7-dihydrodibenzo[b,j]phenanthroline derivatives were synthesized by Pfitzinger condensation of isatins with 1,3-cyclohexanedione and 1,4-cyclohexanedione respectively. Structures of the derivatives were confirmed by NMR and other spectr

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