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94033-72-4

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94033-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94033-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,0,3 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 94033-72:
(7*9)+(6*4)+(5*0)+(4*3)+(3*3)+(2*7)+(1*2)=124
124 % 10 = 4
So 94033-72-4 is a valid CAS Registry Number.

94033-72-4Relevant articles and documents

Scandium triflate-catalysed synthesis of N-substituted pyrroles from amine and 2,5-dimethoxytetrahydrofuran

Zuo, Bing,Chen, Jiuxi,Liu, Miaochang,Ding, Jinchang,Wu, Huayue,Su, Weike

, p. 14 - 16 (2009)

The Clauson-Kass pyrrole synthesis catalysed by scandium triflate afforded N-substituted 2- and 3-unsubstituted pyrroles with yields ranged from good to excellent. Aromatic amines, heteroaomatic amines, 4-methylbenzenesulfonamide and 2-chlorobenzamide are good substrates in this transformation.

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