154218-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 154218-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,2,1 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 154218-88:
(8*1)+(7*5)+(6*4)+(5*2)+(4*1)+(3*8)+(2*8)+(1*8)=129
129 % 10 = 9
So 154218-88-9 is a valid CAS Registry Number.
154218-88-9Relevant articles and documents
Medium Ring Heterocycles: Transamidation Reactions of β-Lactams
Crombie, Leslie,Jones, Raymond C. F.,Osborne, Steven,Mat-Zin, Ab. Rasid
, p. 959 - 960 (1983)
Seven-, eight-, and nine-membered azalactams are easily prepared from azetidin-2-ones by transamidation via N-(halogenoalkyl) derivatives.