21023-86-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21023-86-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,2 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21023-86:
(7*2)+(6*1)+(5*0)+(4*2)+(3*3)+(2*8)+(1*6)=59
59 % 10 = 9
So 21023-86-9 is a valid CAS Registry Number.
21023-86-9Relevant articles and documents
Trisubstituted (Stannylmethyl)lithium as a Methylene Double Anion Equivalent. Reaction with Esters
Sato, Tadashi,Matsuoka, Hiroharu,Igarashi, Tsutomu,Minomura, Masafumi,Murayama, Eigoro
, p. 1207 - 1212 (2007/10/02)
Trisubstituted (stannylmethyl)lithium reacts with electrophiles as a methylene double anion equivalent to produce enolates from esters.The reaction mechanism is discussed.
