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89958-43-0

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89958-43-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89958-43-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,5 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 89958-43:
(7*8)+(6*9)+(5*9)+(4*5)+(3*8)+(2*4)+(1*3)=210
210 % 10 = 0
So 89958-43-0 is a valid CAS Registry Number.

89958-43-0Downstream Products

89958-43-0Relevant articles and documents

Behavior of 4,5-Dihydropyridazinone Derivatives and 3-Chloropyridazine toward Alkylating Agents, Acylhydrazines, and Azides

El-Hashash, Maher A.,El-Nagdy, Sayed I.,Saleh, Refalt M.

, p. 361 - 363 (2007/10/02)

The pyridazinones 2 have been synthesized from the interaction of acid 1 with hydrazines.Reactions of 2 with electrophilic reagents gave O-alkylated derivatives, with POCl3/PCl5 gave chloro derivatives, and with bromine gave the oxidation product.Reaction

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