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156743-04-3

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156743-04-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156743-04-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,7,4 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 156743-04:
(8*1)+(7*5)+(6*6)+(5*7)+(4*4)+(3*3)+(2*0)+(1*4)=143
143 % 10 = 3
So 156743-04-3 is a valid CAS Registry Number.

156743-04-3Relevant articles and documents

Efficient synthesis of orthogonally protected spermidine and norspermidine derivatives

Andruszkiewicz, Ryszard,Radowski, Michal,Czajgucki, Zbigniew

, p. 1085 - 1094 (2007/10/03)

Several orthogonally protected spermidine and norspermidine derivatives have been synthesized via cyanoethylation of monoprotected 1,4-butanediamine (putrescine) or 1,3-propanediamine followed by protection of their secondary amino groups and final reduct

Practical synthesis of the putative polyamine spider toxin FTX: A proposed blocker of voltage-sensitive calcium channels

Blagbrough, Ian S.,Moya, Eduardo

, p. 2057 - 2060 (2007/10/02)

FTX (FTX-3.3), a putative polyamine toxin from American funnel-web spiders, has been synthesized from tri-CBZ-L-arginine. Raney nickel mediated desulfurization of a thioamide, generated selectively with Lawesson's reagent in the presence of the benzyloxyc

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