156481-04-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156481-04-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,4,8 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 156481-04:
(8*1)+(7*5)+(6*6)+(5*4)+(4*8)+(3*1)+(2*0)+(1*4)=138
138 % 10 = 8
So 156481-04-8 is a valid CAS Registry Number.
156481-04-8Relevant articles and documents
Fluorinated amino acids Part 3: Synthesis of β-difluoromethyl-m-tyrosine
Sabol, Jeffrey S.,Brake, Nicholas W.,McDonald, Ian A.
, p. 1821 - 1824 (2007/10/02)
The difluoromethyl carboxylic acid S-(+)-9, was synthesized to assign the absolute configuration of diastereomers 2a and 2b, and the completion of the synthesis of β-difluoromethyl-m-tyrosines 1a, b is reported.
