5623-30-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5623-30-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,2 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5623-30:
(6*5)+(5*6)+(4*2)+(3*3)+(2*3)+(1*0)=83
83 % 10 = 3
So 5623-30-3 is a valid CAS Registry Number.
5623-30-3Relevant articles and documents
Substitution and Addition Reactions at Spiro-Oxiranes
Siegel, Hannes,Wittmann, Helga
, p. 1005 - 1018 (2007/10/02)
Nucleophilic substitution at the spiro carbon atom as well as the CH2-group takes place with spiro-oxiranes 1, 6 and 7, whose spiro carbon atom bear electron withdrawing substituents.In some cases by elimination of formaldehyde a transformation to the cor