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128457-01-2

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128457-01-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128457-01-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,5 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128457-01:
(8*1)+(7*2)+(6*8)+(5*4)+(4*5)+(3*7)+(2*0)+(1*1)=132
132 % 10 = 2
So 128457-01-2 is a valid CAS Registry Number.

128457-01-2Downstream Products

128457-01-2Relevant articles and documents

Novel Heterocyclization of Hydrazinopyridazinones with Dimethyl Acetylenedicarboxylate with Dehydrogenation and Rearrangement

Yamasaki, Tetsuo,Kawaminami, Eiji,Yamada, Tomomi,Okawara, Tadashi,Furukawa, Mitsuru

, p. 991 - 996 (2007/10/02)

5-Hydrazinopyridazin-3(2H)-ones 1 reacted with dimethyl acetylenedicarboxylate 2 to give 4,6-dihydropyridazinopyridazin-5-(1H)-ones 3 by cyclization with dehydrogenation.On the other hand, the reaction of 4-bromo-5-hydrazino- and 5-bromo-4-hydrazin

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