76058-33-8 Usage
Uses
Indicator: pH 4.5 (red) to pH 6.5 (yellow)
Purification Methods
Ethyl Red [2-(4-diethylaminophenylazo)benzoic acid] M 297.4, m 135o, 150-1 5 2o, pK1 2.5, pK2 9.5. Crystallise the acid dye from EtOH/diethyl ether or toluene. It is an indicator: pH 4.4 (red) and 6.2 (yellow). UV: max 447nm. [Beilstein 16 I 316.]
Check Digit Verification of cas no
The CAS Registry Mumber 76058-33-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,0,5 and 8 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 76058-33:
(7*7)+(6*6)+(5*0)+(4*5)+(3*8)+(2*3)+(1*3)=138
138 % 10 = 8
So 76058-33-8 is a valid CAS Registry Number.
InChI:InChI=1/C17H19N3O2/c1-3-20(4-2)14-11-9-13(10-12-14)18-19-16-8-6-5-7-15(16)17(21)22/h5-12H,3-4H2,1-2H3,(H,21,22)/p-1/b19-18+