136316-03-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136316-03-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,1 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 136316-03:
(8*1)+(7*3)+(6*6)+(5*3)+(4*1)+(3*6)+(2*0)+(1*3)=105
105 % 10 = 5
So 136316-03-5 is a valid CAS Registry Number.
136316-03-5Relevant articles and documents
Synthesis and characterization of 5,10,15,20-tetrakis (2-amino-5-chlorophenyl) porphyrins.
Lecas, A.,Boitrel, B.,Rose, E.
, p. 407 - 413 (2007/10/02)
Condensation of pyrrole and 5-chloro-2-nitrobenzaldehyde with Zn(OAc)2, 2H2O and AcOH yields nitroporphyrins of Zn whose reduction with SnCl2, 2H2O and concentrated HCl gives the four atropoisomers of 5,10,15,20-tetrakis (2-amino-5-chlorophenyl) porphyrin
