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213699-50-4

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213699-50-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213699-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,6,9 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 213699-50:
(8*2)+(7*1)+(6*3)+(5*6)+(4*9)+(3*9)+(2*5)+(1*0)=144
144 % 10 = 4
So 213699-50-4 is a valid CAS Registry Number.

213699-50-4Relevant articles and documents

Diastereoselective syntheses of (2R,3R,5R)- and (2S,3S,5S)-3-hydroxy-5- methyl-2-pyrrolidinecarboxylic acid as a component of actinomycin Z1

Tanaka, Ken-Ichi,Sawanishi, Hiroyuki

, p. 10029 - 10042 (2007/10/03)

A novel diastereoselective syntheses of both (2R,3R,5R)-1 and its enantiomer (2S,3S,5S)-1 were accomplished by employing trans-selective nucleophilic addition of cyanide to 3-benzoyloxy-N-acyliminium ions as the key step, starting from trans-4-hydroxy-L-p

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