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18671-01-7

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18671-01-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18671-01-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,7 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18671-01:
(7*1)+(6*8)+(5*6)+(4*7)+(3*1)+(2*0)+(1*1)=117
117 % 10 = 7
So 18671-01-7 is a valid CAS Registry Number.

18671-01-7Relevant articles and documents

Synthesis of the Chlorofusin Cyclic Peptide: Assignment of the Asparagine Stereochemistry

Desai, Pankaj,Pfeiffer, Steven S.,Boger, Dale L.

, p. 5047 - 5050 (2003)

(Equation presented) An efficient synthesis of two diastereomers of the chlorofusin cyclic peptide bearing either the L-Asn3/D-Asn-4 or D-Asn3/L-Asn4 stereochemistry is detailed. Four key subunits were prepared, sequentially coupled, and cyclized to provi

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