39801-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39801-57-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,8,0 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 39801-57:
(7*3)+(6*9)+(5*8)+(4*0)+(3*1)+(2*5)+(1*7)=135
135 % 10 = 5
So 39801-57-5 is a valid CAS Registry Number.
39801-57-5Relevant articles and documents
Protection of Functional Groups and Stannylation of Phenylalanine
Metwally, S. A.,Coenen, H. H.,Stoecklin, G.
, p. 4437 - 4440 (2007/10/02)
The protection of both amino and carboxylic acid groups in p-halogenated phenylalanine was done by using different reagents.The protected amino acid was stannylated by using hexamethyldistannane in the presence of tetrakis(triphenylphosphine)palladium as catalyst.
