52956-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52956-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,9,5 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 52956-17:
(7*5)+(6*2)+(5*9)+(4*5)+(3*6)+(2*1)+(1*7)=139
139 % 10 = 9
So 52956-17-9 is a valid CAS Registry Number.
52956-17-9Relevant articles and documents
Base-induced Novel Ring-opening of 2-Alkyl-2-chloro-1,3-cyclohexanedione
Kapadia, Haresh D.,Sunthankar, S. V.
, p. 993 - 994 (2007/10/02)
2-Chloro derivatives (4a-c) of 1,3-cyclohexanedione give open chain methyl esters (5a-c) with the retention of chloro substituent, upon treatment with sodium acetate in methanol.