137440-87-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137440-87-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,4,4 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137440-87:
(8*1)+(7*3)+(6*7)+(5*4)+(4*4)+(3*0)+(2*8)+(1*7)=130
130 % 10 = 0
So 137440-87-0 is a valid CAS Registry Number.
137440-87-0Relevant articles and documents
TROPYLATION AND PYRYLATION OF SALTS OF ALIPHATIC MONO-, DI-, AND TRINITRO COMPOUNDS
Gakh, A. A.,Kiselev, A. S.
, p. 1853 - 1857 (1991)
We have studied the reactions of salts of nitroalkanes with tropylium and 2,6-diphenylpyrylium salts leading to products of C-tropylation and C-pyrylation of the corresponding anions.The only exception is the salt of cyanodinitromethane, witch is not trop
