253774-86-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 253774-86-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,7,7 and 4 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 253774-86:
(8*2)+(7*5)+(6*3)+(5*7)+(4*7)+(3*4)+(2*8)+(1*6)=166
166 % 10 = 6
So 253774-86-6 is a valid CAS Registry Number.
253774-86-6Relevant articles and documents
A new synthetic route to 10β-alkyldeoxoartemisinins
Ma, Jingyuan,Katz, Esther,Ziffer, Herman
, p. 8543 - 8545 (1999)
Artemisinin was reduced with DIBAL and acetylated to yield 10α-acetoxyartemisinin. The latter compound was treated with titanium tetrachloride and a series of trimethylsiloxyl enol ethers to produce a series of 10β-alkyldeoxoartemisinins.