138118-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138118-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,1 and 8 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138118-33:
(8*1)+(7*3)+(6*8)+(5*1)+(4*1)+(3*8)+(2*3)+(1*3)=119
119 % 10 = 9
So 138118-33-9 is a valid CAS Registry Number.
138118-33-9Relevant articles and documents
Diastereoselective Diels-Alder reactions between substituted 1,3-butadienes and N-α-methylbenzylmaleimide
Baldwin,Greenspan,Alaimo,McPhail
, p. 5877 - 5880 (2007/10/02)
The TiCl4 catalyzed reaction between 2-t-butyl-1,3-butadiene and N-α-methylbenzylmaleimide at -65°C affords diastereomeric Diels-Alder adducts in a 15:1 ratio. The structure of the major adduct was determined by x-ray.
