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115983-23-8

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115983-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 115983-23-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,9,8 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 115983-23:
(8*1)+(7*1)+(6*5)+(5*9)+(4*8)+(3*3)+(2*2)+(1*3)=138
138 % 10 = 8
So 115983-23-8 is a valid CAS Registry Number.

115983-23-8Downstream Products

115983-23-8Relevant articles and documents

Synthesis of N-Ethylguanosine-5'-carboxamide

Jung, Karl-Heinz,Schmidt, Richard R.

, p. 1013 - 1014 (2007/10/02)

N-Ethylguanosine-5'-carboxamide (5) was prepared by condensation of O-benzoyl-protected riburonic acid glycosyl halide 1 and N2-acetylguanine (2) with mercury(II)cyanide as a catalyst.The N7-isomer, obtained as a byproduct, was separated by reversed-phase medium-pressure liquid chromatography.The structures were determined by NMR and UV spectroscopy.

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