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1191885-40-1

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1191885-40-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1191885-40-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,1,8,8 and 5 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1191885-40:
(9*1)+(8*1)+(7*9)+(6*1)+(5*8)+(4*8)+(3*5)+(2*4)+(1*0)=181
181 % 10 = 1
So 1191885-40-1 is a valid CAS Registry Number.

1191885-40-1Relevant articles and documents

Synthesis of (S)- and (R)-5-oxo-piperazine-2-carboxylic acid and its application to peptidomimetics

Guitot, Karine,Carboni, Stefano,Reiser, Oliver,Piarulli, Umberto

experimental part, p. 8433 - 8436 (2010/01/16)

(Chemical Equation Presented) A straightforward synthesis of (S)- and (R)-N-Boc-5-oxopiperazine-2-carboxylic acid is reported starting from L- or D-serine and ethyl glyoxylate. Those were evaluated as constituents in two tetrapeptides by studying their se

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