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457890-62-9

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457890-62-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 457890-62-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,8,9 and 0 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 457890-62:
(8*4)+(7*5)+(6*7)+(5*8)+(4*9)+(3*0)+(2*6)+(1*2)=199
199 % 10 = 9
So 457890-62-9 is a valid CAS Registry Number.

457890-62-9Relevant articles and documents

ASYMMETRIC SYNTHESIS XIV: A SHORT AND EFFICIENT SYNTHESIS OF 3,5-DISUBSTITUTED PYRROLIZIDINE ALKALOIDS VIA THE CN(R,S) METHOD

Arseniyadis, S.,Huang, P. Q.,Husson, H.-P.

, p. 1391 - 1394 (1988)

The enantiospecific synthesis of the dextrorotatory enantiomer of the ant venom alkaloid 3-heptyl-5-methylpyrrolidine 11 has been achieved in four steps and 31percent overall yield from the chiral 2-cyano-5-oxazolopyrrolidine synthon 4.On the basis of pre

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