183990-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183990-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,9,9 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 183990-21:
(8*1)+(7*8)+(6*3)+(5*9)+(4*9)+(3*0)+(2*2)+(1*1)=168
168 % 10 = 8
So 183990-21-8 is a valid CAS Registry Number.
183990-21-8Relevant articles and documents
EPC-synthesis of functionalised amides via chiral β-nitrogenated organolithium compounds
Foubelo, Francisco,Yus, Miguel
, p. 2911 - 2922 (2007/10/03)
The deprotonation of chiral chloroamides or carbamates 1, 4, 7, 10, 13 and 16 with n-butyllithium followed by in situ lithiation with lithium naphthalenide, both at -78°C in THF, leads to the formation of the corresponding chiral dianionic intermediates,
