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4-Pentenoic acid, 3-[[(S)-(4-methylphenyl)sulfinyl]amino]-, methyl ester, (3R)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

667457-50-3

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667457-50-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 667457-50-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,4,5 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 667457-50:
(8*6)+(7*6)+(6*7)+(5*4)+(4*5)+(3*7)+(2*5)+(1*0)=203
203 % 10 = 3
So 667457-50-3 is a valid CAS Registry Number.

667457-50-3Relevant academic research and scientific papers

Asymmetric synthesis of the carbocyclic nucleoside building block (R)-(+)-4-aminocyclopentenone using δ-amino β-ketophosphonates and ring-closing metathesis (RCM)

Davis, Franklin A.,Wu, Yongzhong

, p. 1269 - 1272 (2004)

Amino keto-2,7-dienes undergo ring-closing metathesis (RCM) to give 4-aminocyclopentenones, valuable intermediates in the asymmetric construction of carbocyclic nucleosides. The key amino ketodienes were prepared using δ-amino β-ketophophonates, a new sul

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