109773-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109773-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,7 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109773-81:
(8*1)+(7*0)+(6*9)+(5*7)+(4*7)+(3*3)+(2*8)+(1*1)=151
151 % 10 = 1
So 109773-81-1 is a valid CAS Registry Number.
109773-81-1Relevant articles and documents
A Useful One-Step Synthesis of β-Trihaloacetylvinyl Ethers and Trihaloacetylketene Acetals
Hojo, Masaru,Masuda, Ryoichi,Okada, Etsuji
, p. 1013 - 1014 (2007/10/02)
Trifluoro- and trichloroacetylation of ethyl orthoacetate and some methyl ketone acetals affords the corresponding acylketene acetals and α-substituted β-acylvinyl ethers, respectively, in high yields.
