186903-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186903-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,9,0 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 186903-53:
(8*1)+(7*8)+(6*6)+(5*9)+(4*0)+(3*3)+(2*5)+(1*3)=167
167 % 10 = 7
So 186903-53-7 is a valid CAS Registry Number.
186903-53-7Relevant articles and documents
1,3-Asymmetric induction in enolate alkylation reactions of N-protected γ-amino acid derivatives
Hanessian, Stephen,Schaum, Robert
, p. 163 - 166 (1997)
Dianions derived from N-TFA and N-Boc γ-amino acid esters and amides undergo highly stereoselective α-alkylation reactions. The roles of HMPA, of the cation, the electrophile, and of steric factors were studied.
