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258505-28-1

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258505-28-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 258505-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,5,0 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 258505-28:
(8*2)+(7*5)+(6*8)+(5*5)+(4*0)+(3*5)+(2*2)+(1*8)=151
151 % 10 = 1
So 258505-28-1 is a valid CAS Registry Number.

258505-28-1Downstream Products

258505-28-1Relevant articles and documents

Synthesis of crown ethers containing a thiazole subcyclic unit

Kim, Hong-Seok,Kwon, II-Chun,Choi, Jun-Hyeak

, p. 1285 - 1289 (2007/10/03)

Crown ethers containing a thiazole subcyclic unit are prepared from the reactions of 1,3-bis[2(4-hydroxymethylthiazoyl)]benzene with di-p-tosylates of corresponding di, tri, tetra, pentaethylene glycols in the presence of potassium hydride. However, if the cavity size in the ring system is small, [2+2] cyclization adduct also is formed.

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