222547-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 222547-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,5,4 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 222547-19:
(8*2)+(7*2)+(6*2)+(5*5)+(4*4)+(3*7)+(2*1)+(1*9)=115
115 % 10 = 5
So 222547-19-5 is a valid CAS Registry Number.
222547-19-5Relevant articles and documents
Preparation of pyrrole-2-carboxylates with electron-withdrawing groups at the 4-position
Uno, Hidemitsu,Tanaka, Masanori,Inoue, Takashi,Ono, Noboru
, p. 471 - 474 (2007/10/03)
Reaction of α-trifluoromethyl, α-cyano, and α-ethoxycarbonyl alkenyl sulfones with ethyl isocyanoacetate in the presence of a base gave 4- substituted pyrrole-2-carboxylates in moderate to good yields.
