200941-12-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 200941-12-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,9,4 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 200941-12:
(8*2)+(7*0)+(6*0)+(5*9)+(4*4)+(3*1)+(2*1)+(1*2)=84
84 % 10 = 4
So 200941-12-4 is a valid CAS Registry Number.
200941-12-4Relevant articles and documents
Convergent total synthesis of lamellarin K
Banwell, Martin,Flynn, Bernard,Hockless, David
, p. 2259 - 2260 (2007/10/03)
The azomethine ylide derived from dihydroisoquinolinium salt 24 undergoes an intramolecular [3 + 2] cycloaddition reaction to give pyrrole 25 which upon de-isopropylation affords the marine alkaloid lamellarin K 4.
