Cas 135137-40-5,C20H17N5O3

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Check Digit Verification of cas no

The CAS Registry Mumber 135137-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,1,3 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 135137-40:
(8*1)+(7*3)+(6*5)+(5*1)+(4*3)+(3*7)+(2*4)+(1*0)=105
105 % 10 = 5
So 135137-40-5 is a valid CAS Registry Number.

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135137-40-5Relevant articles and documents

SYNTHESIS AND STUDY OF LIGANDS CONTAINING A HYDRAZONE GROUPING. XIII. SYNTHESIS, STRUCTURE, AND 1H AND 13C NMR SPECTRA OF TRIARYLFORMAZANS ortho-SUBSTITUTED IN N-ARYL GROUPS

Avramenko, G. V.,Kurkovskaya, L. N.,Stepanov, B. I.,Khafizova, R. A.,Khvalov, I. B.

, p. 2499 - 2508 (2007/10/02)

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135137-40-5