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157891-99-1

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157891-99-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157891-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,8,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 157891-99:
(8*1)+(7*5)+(6*7)+(5*8)+(4*9)+(3*1)+(2*9)+(1*9)=191
191 % 10 = 1
So 157891-99-1 is a valid CAS Registry Number.

157891-99-1Relevant articles and documents

Tricyclic Analogues of Acyclovir and Ganciclovir. Influence of Substituents in the Heterocyclic Moiety on the Antiviral Activity

Golankiewicz, Bozenna,Ostrowski, Tomasz,Andrei, Graciela,Snoeck, Robert,Clercq, Eric De

, p. 3187 - 3190 (2007/10/02)

The effect of substitution in the tricyclic moiety of 3,9-dihydro-9-oxo-5H-imidazopurine (1,N-2-ethenoguanine) analogues of acyclovir (1) and ganciclovir (2) on their physical properties and antiherpetic activity was investigated by synthesizing a

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