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189939-44-4

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189939-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189939-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,9,3 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 189939-44:
(8*1)+(7*8)+(6*9)+(5*9)+(4*3)+(3*9)+(2*4)+(1*4)=214
214 % 10 = 4
So 189939-44-4 is a valid CAS Registry Number.

189939-44-4Relevant articles and documents

Tetrahydroimidazo[1,5,4-ef][1,5]benzodiazepinones (isoTIBO's): Synthesis and evaluation as HIV-1 non-nucleoside reverse transcriptase inhibitors

Parker,Dermatakis

, p. 4164 - 4167 (1997)

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