1637-70-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1637-70-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,3 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1637-70:
(6*1)+(5*6)+(4*3)+(3*7)+(2*7)+(1*0)=83
83 % 10 = 3
So 1637-70-3 is a valid CAS Registry Number.
InChI:InChI=1/C10H17N3O9S2/c11-5(10(18)19)1-2-7(14)13(3-8(15)16)9(17)6(12)4-23-24(20,21)22/h5-6H,1-4,11-12H2,(H,15,16)(H,18,19)(H,20,21,22)/t5-,6-/m0/s1