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1255774-33-4

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1255774-33-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1255774-33-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,5,7,7 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1255774-33:
(9*1)+(8*2)+(7*5)+(6*5)+(5*7)+(4*7)+(3*4)+(2*3)+(1*3)=174
174 % 10 = 4
So 1255774-33-4 is a valid CAS Registry Number.

1255774-33-4Relevant academic research and scientific papers

Synthesis of novel allocolchicine analogues with a pyridine c-ring through intermolecular vollhardt diyne-nitrile cyclotrimerization

Nicolaus, Norman,Schmalz, Hans-Günther

, p. 2071 - 2074 (2010)

A short synthesis of new allocolchicinoids with a pyridine C-ring and an oxa-B-ring was developed exploiting a cobalt-catalyzed intermolecular [2+2+2] cycloaddition (diyne-nitrile cyclotrimerization). Starting from readily accessible 3,4,5-trimethoxybenza

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