3688-92-4 Usage
Definition
A reagent for the colorimetric determination of
microgram quantities of thorium.
Hazard
Toxic by ingestion.
Check Digit Verification of cas no
The CAS Registry Mumber 3688-92-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,8 and 8 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 3688-92:
(6*3)+(5*6)+(4*8)+(3*8)+(2*9)+(1*2)=124
124 % 10 = 4
So 3688-92-4 is a valid CAS Registry Number.
InChI:InChI=1/C16H13AsN2O10S2.2Na/c20-16-14(31(27,28)29)8-9-7-10(30(24,25)26)5-6-11(9)15(16)19-18-13-4-2-1-3-12(13)17(21,22)23;;/h1-8,18H,(H2,21,22,23)(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b19-15+;;