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13213-81-5

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13213-81-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13213-81-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,2,1 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13213-81:
(7*1)+(6*3)+(5*2)+(4*1)+(3*3)+(2*8)+(1*1)=65
65 % 10 = 5
So 13213-81-5 is a valid CAS Registry Number.

13213-81-5Relevant articles and documents

PEROVSKITES FOR PHOTOCATALYTIC ORGANIC SYNTHESIS

-

, (2022/01/07)

Nature is capable of storing solar energy in chemical bonds via photosynthesis through a series of C—C, C—O and C—N bond-forming reactions starting from CO2 and light. Direct capture of solar energy for organic synthesis is a promising approach

An efficient procedure for the synthesis of polysubstituted pyrroles in an ionic liquid

He, Yan-Hong,Wang, Gang-Qiang,Xu, Ke-Ling,Guan, Zhi

experimental part, p. 191 - 196 (2011/05/07)

The ionic liquid 1-butyl-3-methyl-imidazolium hydrogen sulfate, [bmim]HSO4, was used as a catalyst and reaction medium for the pyrrole synthesis, and a wide range of aliphatic, aromatic, heteroaromatic and carboxylic 1,4-diketones easily underwent condensations with aniline and ethylenediamine to form polysubstituted pyrroles. Sequential decarboxylation/Paal-Knorr pyrrole condensation was observed, which provides a new and facile approach to monoester pyrroles from 1,4-diketo-2,3-dicarboxylic acid esters.

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