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109034-30-2

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109034-30-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109034-30-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,0,3 and 4 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109034-30:
(8*1)+(7*0)+(6*9)+(5*0)+(4*3)+(3*4)+(2*3)+(1*0)=92
92 % 10 = 2
So 109034-30-2 is a valid CAS Registry Number.

109034-30-2Relevant articles and documents

Transition Metal-Free Synthesis of 3-Alkynylpyrrole-2-carboxylates via Michael Addition/Intramolecular Cyclodehydration

Teng, Qing-Hu,Xu, Yan-Li,Liang, Ying,Wang, Heng-Shan,Wang, Ying-Chun,Pan, Ying-Ming

, p. 1897 - 1902 (2016/07/06)

A transition metal-free and efficient method for the synthesis of 3-alkynylpyrrole-2-carboxylates from diynones and glycine esters or 2-aminoacetophenone hydrochloride has been developed. This transformation provides a large range of substituted pyrroles in good to excellent yields with the elimination of water as the only by-product. The detailed mechanistic studies elucidated that this transformation involves a Michael addition/intramolecular cyclodehydration process. (Figure presented.) .

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