187809-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 187809-40-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,8,0 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 187809-40:
(8*1)+(7*8)+(6*7)+(5*8)+(4*0)+(3*9)+(2*4)+(1*0)=181
181 % 10 = 1
So 187809-40-1 is a valid CAS Registry Number.
187809-40-1Relevant articles and documents
Synthesis of ubiquinones-3 specifically labelled with 13C at C(5)- or C(6)-positions
Boullais, Claude,Breton, Jacques,Nabedryk, Eliane,Mioskowski, Charles
, p. 2505 - 2512 (2007/10/03)
(5-13C) and (6-13C) ubiquinones-3 (20a and 20b) were synthesised from (1-13C) trichloroacetic acid (8a) in 12 steps. The key step was a Diels Alder reaction between 2,5-bis (trimethylsilyloxy)-3-methylfuran (2) and (2-sup
