918943-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 918943-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,8,9,4 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 918943-22:
(8*9)+(7*1)+(6*8)+(5*9)+(4*4)+(3*3)+(2*2)+(1*2)=203
203 % 10 = 3
So 918943-22-3 is a valid CAS Registry Number.
918943-22-3Relevant articles and documents
Microwave-assisted synthesis of benzoxazole-7-carboxylate esters using trifluoroacetic acid and acetic acid
Huxley, Anthony
, p. 2658 - 2660 (2008/09/16)
Existing routes to benzoxazole-7-carboxylates are low-yielding. The following letter describes a new methodology for the synthesis of benzoxazole-7-carboxylates in much improved yield using trifluoroacetic acid-acetic acid and microwave irradiation. Georg
