178941-15-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178941-15-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,9,4 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 178941-15:
(8*1)+(7*7)+(6*8)+(5*9)+(4*4)+(3*1)+(2*1)+(1*5)=176
176 % 10 = 6
So 178941-15-6 is a valid CAS Registry Number.
178941-15-6Relevant articles and documents
A new convergent method for porphyrin synthesis based on a '3 + 1' condensation
Boudif, Arezki,Momenteau, Michel
, p. 1235 - 1242 (2007/10/03)
A new methodology based on the '3 + 1' acid-catalytic condensation of tripyrranes and pyrrole-2,5-dicarbaldehyde has been used, for the first time, for the synthesis of two types of porphyrins: vic-dipropionic ester porphyrins 30 and 31 including an analo