135220-04-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135220-04-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,2,2 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 135220-04:
(8*1)+(7*3)+(6*5)+(5*2)+(4*2)+(3*0)+(2*0)+(1*4)=81
81 % 10 = 1
So 135220-04-1 is a valid CAS Registry Number.
135220-04-1Relevant articles and documents
AMINOMETHYLATION OF 1-R-TETRAZOLES
Karavai, V. P.,Gaponik, P. N.
, p. 55 - 60 (2007/10/02)
The reaction of tetrazole and a series of its 1-substituted derivatives with formaldehyde and alkylamines under mild conditions results in aminomethylation of the heterocyclic ring at the carbon atom with the formation of the corresponding Mannich bases.I