1240503-28-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1240503-28-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,5,0 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1240503-28:
(9*1)+(8*2)+(7*4)+(6*0)+(5*5)+(4*0)+(3*3)+(2*2)+(1*8)=99
99 % 10 = 9
So 1240503-28-9 is a valid CAS Registry Number.
1240503-28-9Relevant articles and documents
Ruthenium catalyzed selective regio-and-mono-allylation of cyclic 1,3-diketones using allyl alcohols as substrates
Gruber, Stefan,Pregosin, Paul S.
, p. 3235 - 3242 (2009)
The new ruthenium-sulfonate catalyst Ru(Cp*) (η3-C3H5)(p-CH3C 6H4SO3)2, (Cp*= pentamethylcyclopentadienyl), rapidly and regioselectively mono-all