132906-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 132906-77-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,9,0 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 132906-77:
(8*1)+(7*3)+(6*2)+(5*9)+(4*0)+(3*6)+(2*7)+(1*7)=125
125 % 10 = 5
So 132906-77-5 is a valid CAS Registry Number.
132906-77-5Relevant articles and documents
Direct syntheses of pyrazole-4-carbaldehydes and pyrimidine-5-carbaldehydes starting from triformylmethane.
Takagi, K.,Bajnati, A.,Hubert-Habart, M.
, p. 660 - 666 (2007/10/02)
Triformylmethane is transformed into the pyrazole-4-carbaldehydes 2, 4, 6, 7, 9, 11 and the pyrazole-4-carbaldehydes 8, 10, 12 by corresponding hydrazines, and into the pyrimidine-5-carbaldehydes 13, 14, 15 by appropriate amidines.