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167489-80-7

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167489-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167489-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,4,8 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 167489-80:
(8*1)+(7*6)+(6*7)+(5*4)+(4*8)+(3*9)+(2*8)+(1*0)=187
187 % 10 = 7
So 167489-80-7 is a valid CAS Registry Number.

167489-80-7Downstream Products

167489-80-7Relevant articles and documents

Synthesis of new crown analogs derived from bisphenol

Kumar, Sukeerthi,Mashraqui, Sabir H.

, p. 656 - 661 (2007/10/03)

Synthesis of hexaoxa 5, octaoxa 6 and tetradiaza macrocycle 7 has been accomplished by reacting bisphenol 1 with tosylates 2,3 and 4 respectively, under basic conditions. Dithia-bridged macrocycles 10 and 13 are prepared by reacting key-intermediates, ditosylate 9 and diiodo compound 12, respectively with Na2S.9H2O. Attempted metal ion complexation and two phase extraction with macrocycles 5, 6, 10 and 13 was unsuccessful probably due to insufficient ligating potential available with these macrocycles.

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