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176693-97-3

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176693-97-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 176693-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,6,9 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 176693-97:
(8*1)+(7*7)+(6*6)+(5*6)+(4*9)+(3*3)+(2*9)+(1*7)=193
193 % 10 = 3
So 176693-97-3 is a valid CAS Registry Number.

176693-97-3Relevant articles and documents

One-pot Synthesis of a Novel 1,1′-Bridged Bis(benzo[g]indole) Diester and the Preparation of Some of its Derivatives

Shyadligeri, Ashok S.,Gadaginamath, Guru S.,Subramanian

, p. 114 - 115 (2007/10/03)

Diethyl 5,5′-dihydroxy-2,2′-dimethyl-1,1′-(ethane-1,2-diyl)di(1H- benzo[g]indole)-3,3′-dicarboxylate (3) was prepared in a one-flask procedure by the condensation of diethyl 3,3′-(ethane-1,2-diyldiimino)dibutanoate (1) with 1,4-naphthoquinone (2) in 1:2 molar ratio; reaction of 3 separately with methyl iodide and ethyl chloroacetate afforded the corresponding O-alkylated derivatives 4 and 5, respectively.

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