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18728-47-7

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18728-47-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18728-47-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,7,2 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 18728-47:
(7*1)+(6*8)+(5*7)+(4*2)+(3*8)+(2*4)+(1*7)=137
137 % 10 = 7
So 18728-47-7 is a valid CAS Registry Number.

18728-47-7Relevant articles and documents

Crown Ether-Type Cyclophanes: Efficient Synthesis via Quadruple or Double Cycloadditions and Molecular Recognition Study

Kim, Byeang Hyean,Jeong, Eun Jeong,Jung, Won Hee

, p. 6390 - 6391 (1995)

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Synthesis of 1,3- and 1,4-bis(3-nitrofurazan-4-yl)benzenes and isomeric 1,3- and 1,4-bis[3(4)-nitrofuroxan-4(3)-yl]benzenes

Ovchinnikov, Igor V.,Finogenov, Alexey O.,Epishina, Margarita A.,Strelenko, Yuri A.,Makhova, Nina N.

scheme or table, p. 217 - 219 (2009/12/05)

The 1,3- and 1,4-bis(3-nitrofurazan-4-yl)benzenes have been synthesized by dehydration of 1,3- and 1,4-bis(2-aminoglyoximo- 1-yl)benzenes followed by oxidation of amino groups. The 1,3- and 1,4-bis(3-nitrofuroxan-4-yl)benzenes have been prepared by nitroz

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