99188-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99188-53-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,1,8 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99188-53:
(7*9)+(6*9)+(5*1)+(4*8)+(3*8)+(2*5)+(1*3)=191
191 % 10 = 1
So 99188-53-1 is a valid CAS Registry Number.
99188-53-1Relevant articles and documents
A direct preparation of 6-methylene-2-cyclohexenones
Kraus, George A.,Kim, Junwon
, p. 1737 - 1738 (2007/10/03)
The reaction of enol silyl ethers with Eschenmoser's salt, followed by methylation and elimination, provides ready access to 6-methylene-2- cyclohexenones.
