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80958-61-8

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80958-61-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80958-61-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,9,5 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 80958-61:
(7*8)+(6*0)+(5*9)+(4*5)+(3*8)+(2*6)+(1*1)=158
158 % 10 = 8
So 80958-61-8 is a valid CAS Registry Number.

80958-61-8Relevant articles and documents

SYNTHESIS OF FUNCTIONALIZED DIAZA(2,5)PYRIDINOPHANES

Iwata, Masaaki,Kuzuhara, Hiroyoshi

, p. 1749 - 1752 (2007/10/02)

A general synthetic method of N2,N(n+3)-di-p-toluenesulfonyl-(n+9)-hydroxy-(n+10)-hydroxymethyl-(n+9),(n+10)'-O-isopropylidene-2,(n+3)-diaza(2,5)pyridinophanes was established by the reaction of 5'-deoxy-2',5'-dichloro-3,4'-O-isopropylidenepyridoxine hydrochloride with N,N'-di-p-toluenesulfonyl-α,ω-alkanediamine disodium salt in N,N-dimethylformamide at 70-90 deg C in fairly good yield depending on the chain length.

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