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130945-11-8

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130945-11-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130945-11-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,9,4 and 5 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 130945-11:
(8*1)+(7*3)+(6*0)+(5*9)+(4*4)+(3*5)+(2*1)+(1*1)=108
108 % 10 = 8
So 130945-11-8 is a valid CAS Registry Number.

130945-11-8Relevant articles and documents

Synthesis of Large Macrocyclic Tetraaza Compounds with A Methylene Backbone: Cyclo4, (n = 6,7,8,9 and 10). The Formation of 28-, 32-, 36-, 40- and 44-Membered Rings.

Tomohiro, Takenori,Uoto, Kouichi,Okuno, Hiroaki (Yohmei)

, p. 1233 - 1239 (2007/10/02)

A series of macrocyclic tetraamines with 28-, 32-, 36-, 40- and 44-membered rings have been efficiently prepared from the corresponding ditosylamide and monobromoalcohol derivatives in 6 steps via a double condensation reaction.Overall yields were: 41, 41, 46, 29, and 33 percent, respectively, for 1,8,15,22-tetraazacyclooctacontane (11a), 1,9,17,25-tetraazacyclodotriacontane (11b), 1,10,19,28, tetraazacyclohexatriacontane (11c), 1,11,21,31-tetraazacyclotetracontane (11d) and 1,12,23,34-tetraazacyclotetratetracontane (11e).

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