99502-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99502-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,0 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99502-89:
(7*9)+(6*9)+(5*5)+(4*0)+(3*2)+(2*8)+(1*9)=173
173 % 10 = 3
So 99502-89-3 is a valid CAS Registry Number.
InChI:InChI=1/C10H8ClNO4/c11-10(15)16-12-8(13)6-4-1-2-5(3-4)7(6)9(12)14/h1-2,4-7H,3H2
99502-89-3Relevant articles and documents
5-Norbornene-2,3-dicarboximido Carbonochloridate. A New Stable Reagent for the Introduction of Amino-Protecting Groups
Henklein, Peter,Heyne, Hans-Ulrich,Halatsch, Wolf-Rainer,Niedrich, Hartmut
, p. 166 - 167 (2007/10/02)
The synthesis of activated carbonates, based on a new carbonochloridate derived from N-hydroxy-5-norbornene-2,3-dicarboximide, is reported.These activated carbonic esters are excellent reagents for the introduction of all currently used urethane protecting groups.