915943-58-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 915943-58-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,5,9,4 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 915943-58:
(8*9)+(7*1)+(6*5)+(5*9)+(4*4)+(3*3)+(2*5)+(1*8)=197
197 % 10 = 7
So 915943-58-7 is a valid CAS Registry Number.
915943-58-7Relevant articles and documents
A concise synthesis of 5-demethyl-HKI 0231A and 5-demethyl-HKI 0231B
Kraus, George A.,Wu, Tao
, p. 7801 - 7803 (2007/10/03)
The pentacyclic skeleton of HKI 0231A and HKI 0231B was synthesized by a novel radical cyclization/oxidation followed by DDQ oxidation to introduce the methoxyl groups. This is the first synthetic pathway to both the HKI 0231A and the HKI 0231B series.
