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141694-95-3

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141694-95-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141694-95-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,6,9 and 4 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 141694-95:
(8*1)+(7*4)+(6*1)+(5*6)+(4*9)+(3*4)+(2*9)+(1*5)=143
143 % 10 = 3
So 141694-95-3 is a valid CAS Registry Number.

141694-95-3Downstream Products

141694-95-3Relevant articles and documents

Synthesis of chiral pyrrolidine derivatives from (S)-pyroglutamic acid. I: 7-Substituted (2R,5S)-2-aryl-1-aza-3-oxabicyclo[3.3.0]octan-8-ones, 7- substituted (2R,5S)-2-aryl-1-aza-3-oxabicyclo[3.3.0]oct-6-en-8-ones and 3- substituted (S)-5-(hydroxymethyl)-2-pyrrolidinones

Nagasaka,Imai

, p. 1081 - 1088 (2007/10/02)

The following chiral pyrrolidine derivatives, 7-substituted (2R,5S)-2- aryl-1-aza-3-oxabicyclo[3.3.0]octan-8-ones (18-24), 7-substituted (2R,5S)-2- aryl-1-aza-3-oxabicyclo[3.3.0]oct-6-en-8-ones (25-29) and 3-substituted (S)- 5-(hydroxymethyl)-2-pyrrolidinones (30-34), were synthesized starting from (S)-pyroglutamic acid and their absolute configurations were determined based on their 1H-NMR spectra.

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