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156243-43-5

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156243-43-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156243-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,2,4 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 156243-43:
(8*1)+(7*5)+(6*6)+(5*2)+(4*4)+(3*3)+(2*4)+(1*3)=125
125 % 10 = 5
So 156243-43-5 is a valid CAS Registry Number.

156243-43-5Relevant articles and documents

Synthesis and mutagenicity of a new mutagen, 2-amino-1,7,9- trimethylimidazo-[4,5-g]quinoxaline, and its analog

Achiwa,Shiozawa,Nukaya,Terao

, p. 408 - 409 (2007/10/02)

A new mutagen, 2-amino-1,7,9-trimethylimidazo-[4,5-g]quinoxaline (1), isolated from beef extract, was synthesized from 3-fluoro-2-methylaniline via an intermediate, 2,8-dimethyl-7-methylaminoquinoxaline (7a). Its 2- methylanalog (2) was also synthesized from the same intermediate. The synthetic 1 showed the same mutagenic activity as the isolated mutagen. However, 2 was non-mutagenic.

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