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137502-86-4

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137502-86-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137502-86-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,0 and 2 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 137502-86:
(8*1)+(7*3)+(6*7)+(5*5)+(4*0)+(3*2)+(2*8)+(1*6)=124
124 % 10 = 4
So 137502-86-4 is a valid CAS Registry Number.

137502-86-4Relevant articles and documents

SYNTHESIS AND REGIOSELECTIVITY OF THE -SIGMATROPIC REARRANGEMENT OF SUBSTITUTED 2-ALLYLTHIO- AND 2-ALLYLSELENO-1,4-DIHYDROPYRIDINES

Litvinov, V. P.,Sharanin, Yu. A.,Goncharenko, M. P.,Dyachenko, V. D.,Shestopalov, A. M.

, p. 1675 - 1681 (2007/10/02)

The reaction of 3-cyano-1,4-dihydropyridine-2-thiolates and the corresponding selenolates with allyl bromide gave 2-allylthio- and 2-allylseleno-3-cyano-1,4-dihydropyridines, which, upon heating in various solvents or in the solid state, undergo -sig

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