68391-42-4 Usage
Flammability and Explosibility
Nonflammable
Contact allergens
The synthetic azo dye Disperse Orange 31 was wrongly
substituted by Disperse Orange 3 in patch test materials
from Chemotechnique. This situation explains why
a relatively low percentage of patients positive to PPD
were positive to Disperse Orange 3, although a coreaction
is explained to be very frequent because of
skin transformation of Disperse Orange 3 into PPD.
Check Digit Verification of cas no
The CAS Registry Mumber 68391-42-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,3,9 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 68391-42:
(7*6)+(6*8)+(5*3)+(4*9)+(3*1)+(2*4)+(1*2)=154
154 % 10 = 4
So 68391-42-4 is a valid CAS Registry Number.
InChI:InChI=1/C19H19N5O4/c1-15(25)28-14-13-23(12-2-11-20)18-7-3-16(4-8-18)21-22-17-5-9-19(10-6-17)24(26)27/h3-10H,2,12-14H2,1H3/b22-21+