167962-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 167962-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,9,6 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 167962-42:
(8*1)+(7*6)+(6*7)+(5*9)+(4*6)+(3*2)+(2*4)+(1*2)=177
177 % 10 = 7
So 167962-42-7 is a valid CAS Registry Number.
167962-42-7Relevant articles and documents
NITRATION OF OCTAPHENYL-MESO-TETRAAZAPORPHIN
Chizhova, N. V.,Berezin, B. D.
, p. 1765 - 1767 (2007/10/03)
The nitration of octaphenyl-meso-tetraazaporphin with sodiun nitrite in trifluoroacetic acid leads to octakis(4-nitrophenyl)tetraazaporphin.