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123003-91-8

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123003-91-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123003-91-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,0,0 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 123003-91:
(8*1)+(7*2)+(6*3)+(5*0)+(4*0)+(3*3)+(2*9)+(1*1)=68
68 % 10 = 8
So 123003-91-8 is a valid CAS Registry Number.

123003-91-8Downstream Products

123003-91-8Relevant articles and documents

The Reformatsky Type Reaction of Gilman and Speeter in the Preparation of Valuable β-Lactams in Carbapenem Synthesis: Scope and Synthetic Utility

Palomo, Claudio,Cossio, Fernando P.,Arrieta, Ana,Odriozola, Jose M.,Oiarbide, Mikel,Ontoria, Jesus M.

, p. 5736 - 5745 (2007/10/02)

The preparation of apppropriately substituted 3-alkyl β-lactams from the Reformatsky type reaction of Gilman and Speeter is described.Treatment of Schiff bases derived from α-methylcinnamaldehyde and amines with ethyl α-bromobutyrate or ethyl α-bromoisova

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