209049-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209049-16-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,0,4 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 209049-16:
(8*2)+(7*0)+(6*9)+(5*0)+(4*4)+(3*9)+(2*1)+(1*6)=121
121 % 10 = 1
So 209049-16-1 is a valid CAS Registry Number.
209049-16-1Relevant articles and documents
Synthetic studies on tetrazomine: Stereochemical assignment of the β- hydroxypipecolic acid
Scott, Jack D.,Tippie, Tracy N.,Williams, Robert M.
, p. 3659 - 3662 (2007/10/03)
The asymmetric syntheses of 2(R), 3(R)- and 2(S), 3(S)-β- hydroxypipecolic acids are described, including the determination of the absolute stereochemistry of the β-hydroxypipecolic acid moiety of tetrazomine.