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1227204-45-6

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1227204-45-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1227204-45-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,7,2,0 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1227204-45:
(9*1)+(8*2)+(7*2)+(6*7)+(5*2)+(4*0)+(3*4)+(2*4)+(1*5)=116
116 % 10 = 6
So 1227204-45-6 is a valid CAS Registry Number.

1227204-45-6Relevant articles and documents

An efficient method for the synthesis of unsymmetrical 2,2′- bis(pyrrolyl)alkanes

Murat-Onana, Marie Laure,Berini, Christophe,Minassian, Frederic,Pelloux-Leon, Nadia,Denis, Jean-Noel

supporting information; experimental part, p. 2204 - 2211 (2010/07/04)

A new strategy for the preparation of unsymmetrical 2,2′- bis(pyrrolyl)alkanes has been developed. It involved the condensation of pyrrole derivatives onto N-benzylhydroxylamines in the presence of HCl. This two-step procedure provided access to a wide variety of 2,2′-dipyrromethanes (3a-m). It has also been extended to the synthesis of tripyrromethanes 4a-d and of N-confused dipyrromethanes 6a-d.

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