218285-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218285-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,2,8 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 218285-57:
(8*2)+(7*1)+(6*8)+(5*2)+(4*8)+(3*5)+(2*5)+(1*7)=145
145 % 10 = 5
So 218285-57-5 is a valid CAS Registry Number.
218285-57-5Relevant articles and documents
A practical method for the conversion of β-hydroxy carboxylic acids into the corresponding β-amino acids
Jin, Yonghao,Kim, Dong H.
, p. 1189 - 1190 (1998)
Optically active α- or β-substituted βamino acids were synthesized from the corresponding β-hydroxy acids in 4 steps in excellent yield. Stereochemistry was retained at the α-position and reversed at the β-position during the conversion.