444991-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 444991-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,4,9,9 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 444991-98:
(8*4)+(7*4)+(6*4)+(5*9)+(4*9)+(3*1)+(2*9)+(1*8)=194
194 % 10 = 4
So 444991-98-4 is a valid CAS Registry Number.
444991-98-4Relevant academic research and scientific papers
An efficient synthesis of γ-substituted α,β-unsaturated-δ-lactams. Formal synthesis of (±)-protoemetinol
Huang, Chang-Gin,Chang, Bo-Rui,Chang, Nein-Chen
, p. 2721 - 2723 (2007/10/03)
γ-Substituted α,β-unsaturated δ-lactams 1 was synthesized from α-sulfinyl acetamides 3 in three steps. Formal synthesis of (±)-protoemetinol was also reported.
