209736-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209736-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,7,3 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 209736-09:
(8*2)+(7*0)+(6*9)+(5*7)+(4*3)+(3*6)+(2*0)+(1*9)=144
144 % 10 = 4
So 209736-09-4 is a valid CAS Registry Number.
209736-09-4Relevant articles and documents
An enantiocontrolled synthesis of the masked taxol C-13 side chain, oxazoline carboxylic acid
Kang, Sung Ho,Kim, Cheol Min,Youn, Joo-Hack
, p. 3581 - 3582 (2007/10/03)
Oxazoline carboxylic acid 6 as the taxol side chain precursor has been efficiently synthesized via the intramolecular iodoamidation of allylic trichloroacetimidate derived from trans-olefinic diol 1.
