145694-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 145694-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,5,6,9 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 145694-42:
(8*1)+(7*4)+(6*5)+(5*6)+(4*9)+(3*4)+(2*4)+(1*2)=154
154 % 10 = 4
So 145694-42-4 is a valid CAS Registry Number.
145694-42-4Relevant articles and documents
Facile enzymatic preparation for enantiomeric β-lactams
Nagai,Shiozawa,Achiwa,Terao
, p. 2227 - 2229 (1992)
Optically active β-lactams were obtained conveniently by lipase-catalyzed enantioselective hydrolysis of 1-acyloxymethyl-2-azetidinones and esterification of 1-hydroxymethyl-3,3-dimethyl-2-azetidinone with vinyl acetate in organic solvent.