49666-94-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 49666-94-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,6 and 6 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 49666-94:
(7*4)+(6*9)+(5*6)+(4*6)+(3*6)+(2*9)+(1*4)=176
176 % 10 = 6
So 49666-94-6 is a valid CAS Registry Number.
49666-94-6Relevant articles and documents
On a safe and practical method for the preparation of β-keto phosphonates
Corbel, Bernard,L'Hostis-Kervella, Isabelle,Haelters, Jean-Pierre
, p. 2561 - 2568 (1996)
Acylations of the magnesium enolate derivatives of trimethyl and triethylphosphonoacetates, using a magnesium chloride-triethylamine system, lead to 2-acetylphosphonoacetates which are decarbalkoxylated to give β-keto phosphonates.
