156748-09-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156748-09-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,7,4 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 156748-09:
(8*1)+(7*5)+(6*6)+(5*7)+(4*4)+(3*8)+(2*0)+(1*9)=163
163 % 10 = 3
So 156748-09-3 is a valid CAS Registry Number.
156748-09-3Relevant articles and documents
Synthesis of heterocyclic α-aminophosphonic acids
Elachqar,El Hallaoui,Roumestant,Viallefont
, p. 1279 - 1286 (1994)
Heterocyclic (α-aminophosphonic acids derivatives were easily obtained by 1,3 dipolar cycloaddition of acetylenic compounds on azido α-aminophosphonic esters.