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29873-09-4

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29873-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29873-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,8,7 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 29873-09:
(7*2)+(6*9)+(5*8)+(4*7)+(3*3)+(2*0)+(1*9)=154
154 % 10 = 4
So 29873-09-4 is a valid CAS Registry Number.

29873-09-4Relevant articles and documents

1, 2, 3, 9-tetrahydro-4H-carbazol-4-one and 8, 9-dihydropyrido- [1, 2-a]indol-6(7H)-one from 1H-indole-2-butanoic acid

Bunce, Richard A.,Nammalwar, Baskar

experimental part, p. 172 - 177 (2009/07/17)

Efficient syntheses of the title ring systems have been developed from 1H-indole-2-butanoic acid, which was easily prepared from 2-fluoro-1- nitrobenzene in four steps. Heating 1H-indole-2-butanoic acid in toluene containing p-toluenesulfonic acid at 110°

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