259795-06-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 259795-06-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,7,9 and 5 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 259795-06:
(8*2)+(7*5)+(6*9)+(5*7)+(4*9)+(3*5)+(2*0)+(1*6)=197
197 % 10 = 7
So 259795-06-7 is a valid CAS Registry Number.
259795-06-7Relevant academic research and scientific papers
A stereoselective synthesis of ethyl 9-cis-7,8-didehydro-19-trifluoromethylretinoate
Qing, Feng-Ling,Ying, Jieweng,Zhang, Yanmei
, p. 31 - 33 (2007/10/03)
The design and synthesis of ethyl 9-cis-7,8-didehydro-19-trifluoromethylretinoate was described. The key step is the Sonogashira reaction of ethyl 3-iodo-4,4,4-trifluoro-2(Z)-butenoate 2 with terminal alkyne 3.
