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442636-24-0

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442636-24-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 442636-24-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,2,6,3 and 6 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 442636-24:
(8*4)+(7*4)+(6*2)+(5*6)+(4*3)+(3*6)+(2*2)+(1*4)=140
140 % 10 = 0
So 442636-24-0 is a valid CAS Registry Number.

442636-24-0Downstream Products

442636-24-0Relevant articles and documents

Synthesis and properties of novel macrocyclic compounds bearing thiourea moieties by use of chemical feature of hypervalent sulfur

Matsumura, Noboru,Konishi, Tsunao,Hayashi, Hirokazu,Yasui, Masanori,Iwasaki, Fujiko,Mizuno, Kazuhiko

, p. 189 - 202 (2007/10/03)

Macrocyclic compounds 5a-i bearing two tetraazathiapentalene frameworks were synthesized by the reaction of 10-S-3 tetraazathiapentalene derivatives 3a-f with compounds having various diisothiocyanate functions 4a-e. The reduction of the macrocyclic compounds with NaBH4 afforded the ring-opened macrocyclic compounds 11a-b and 11e-h by elimination of the hypervalent sulfur. The structures of these compounds were established by their spectral data and also by the X-ray crystallographic analysis of 11a. The other ring-opened macrocyclic compounds 14a and 14e-h that bear four thiourea groups were synthesized by alkaline hydrolysis of 5a and 5e-h in that elimination of the C=SIV moiety in the tetraazathiapentalene rings occurred.

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