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74028-19-6

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74028-19-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74028-19-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,0,2 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74028-19:
(7*7)+(6*4)+(5*0)+(4*2)+(3*8)+(2*1)+(1*9)=116
116 % 10 = 6
So 74028-19-6 is a valid CAS Registry Number.

74028-19-6Relevant articles and documents

A practical and expeditious method for the preparation of the potential anticancer agent 5,6,11,12,17,18,23,24-octahydrocyclododeca[1,2-b:4,5-b′: 7,8-b″:10,11-b?]tetraindole (CTet)

Lucarini, Simone,Antonietti, Francesca,Tontini, Andrea,Mestichelli, Paola,Magnani, Mauro,Duranti, Andrea

, p. 2812 - 2814 (2011)

A new synthetic method to obtain the potential anticancer agent 5,6,11,12,17,18,23,24-octahydrocyclododeca[1,2-b:4,5-b′:7, 8-b′′:10,11-b′′′]tetraindole (CTet), starting from 1H-indole-3-carboxaldehyde and sulfamide, is described. Although a mixture of CTet and cyclic indole trimer (CTr) is formed, higher CTet/CTr ratio (4:6) and CTet yield (15%) make our protocol more favorable than those reported in the literature. A discussion on the possible reaction mechanism is reported.

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