50903-48-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 50903-48-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,9,0 and 3 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 50903-48:
(7*5)+(6*0)+(5*9)+(4*0)+(3*3)+(2*4)+(1*8)=105
105 % 10 = 5
So 50903-48-5 is a valid CAS Registry Number.
InChI:InChI=1/C14H14F5NO4/c1-5(20-13(22)24-14(2,3)4)12(21)23-11-9(18)7(16)6(15)8(17)10(11)19/h5H,1-4H3,(H,20,22)
50903-48-5Relevant articles and documents
Bis(pentaluorophenyl) sulfite - A new reagent for the synthesis of activated pentafluorophenyl esters of N-protected amino acids
Il'ina,Davidovich,Rogozhin
, p. 2539 - 2541 (2007/10/02)
A method was proposed for the preparation of bis(perfluorophenyl) sulfite, an effective new reagent for the synthesis of pentafluorophenyl esters of N-protected amino acids without racemization.
