138690-87-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138690-87-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,9 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138690-87:
(8*1)+(7*3)+(6*8)+(5*6)+(4*9)+(3*0)+(2*8)+(1*7)=166
166 % 10 = 6
So 138690-87-6 is a valid CAS Registry Number.
138690-87-6Relevant articles and documents
REACTION OF O- AND P-NAPHTHOFUCHSONE WITH THIOL PHOSPHORIC ACIDS AND PHOSPHORUS PENTASULPHIDE
El-Kateb, Ahmed,Hennawy, Ebtisam,Shabana, Rashad,Abdel-Malek, Hoda
, p. 190 (2007/10/02)
The reaction of o-, and p-naphthofuchsone with thiol phosphoric acids and phosphorus pentasulphide, was undertaken.