19721-74-5 Usage
Safety Profile
Poison by ingestion. Moderatelytoxic by skin contact.
Check Digit Verification of cas no
The CAS Registry Mumber 19721-74-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,2 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19721-74:
(7*1)+(6*9)+(5*7)+(4*2)+(3*1)+(2*7)+(1*4)=125
125 % 10 = 5
So 19721-74-5 is a valid CAS Registry Number.
InChI:InChI=1/C4H6Cl4O2S/c5-1-3(7)11(9,10)4(8)2-6/h3-4H,1-2H2