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667466-76-4

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667466-76-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 667466-76-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,4,6 and 6 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 667466-76:
(8*6)+(7*6)+(6*7)+(5*4)+(4*6)+(3*6)+(2*7)+(1*6)=214
214 % 10 = 4
So 667466-76-4 is a valid CAS Registry Number.

667466-76-4Downstream Products

667466-76-4Relevant articles and documents

γ-oxo carboxylic acids in heterocyclic synthesis: Part IV - Synthesis of some pyridazines containing phthalyl and tosyl amino acids using DCC as the condensing agent

Aly,Wasfy

, p. 629 - 635 (2007/10/03)

3(2H)-Oxo-, 3-mercapto- or 3-amino-pyridazine derivatives 3,5 and 6 have been coupled with N-phthalyl- or N-tosyl-amino acids in one-step at room temperature by using N,N′-dicyclohexylcarbodiimide as the condensing agent to furnish the corresponding 3-N-(phthalyl- or tosyl-amino acids) pyridazine derivatives (7-9)a-h, respectively. Hydrazinolysis of the N-phthalyl derivatives (7-9)a-d in methanol yields the corresponding unprotected derivatives (7-9)M 9)i-l. The anti-bacterial activity of the prepared compounds has been tested.

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