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124031-23-8

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124031-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124031-23-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,0,3 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 124031-23:
(8*1)+(7*2)+(6*4)+(5*0)+(4*3)+(3*1)+(2*2)+(1*3)=68
68 % 10 = 8
So 124031-23-8 is a valid CAS Registry Number.

124031-23-8Downstream Products

124031-23-8Relevant articles and documents

An Improved Method for the Preparation of Symmetrically Substituted Porphyrins via 2-Methoxymethyl-3,4-disubstituted Pyrrole Derivatives

Kinoshita, Hideki,Tanaka, Shingo,Inomata, Katsuhiko

, p. 1107 - 1108 (1989)

2-Methoxymethylpyrrole derivatives readily available from 2-methylthiomethylpyrroles were found to be readily cyclized to porphyrinogens with formic acid, and subsequent oxidation with O2 affords the corresponding porphyrins in excellent yields.

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