151831-22-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 151831-22-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,1,8,3 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 151831-22:
(8*1)+(7*5)+(6*1)+(5*8)+(4*3)+(3*1)+(2*2)+(1*2)=110
110 % 10 = 0
So 151831-22-0 is a valid CAS Registry Number.
151831-22-0Relevant articles and documents
PYRAZOLOPYRIDINES. 1. FORMYLATION AND ACYLATION OF PYRAZOLOPYRIDINES
Tanji, Ken-ichi,Sasahara, Takehiko,Suzuki, Junko,Higashino, Takeo
, p. 915 - 924 (2007/10/02)
In the treatment of pyrazolopyridines with dimethylformamide and phosphorus oxychloride, Vilsmeier-Haack formylation proceeded at the 3-position, giving 3-pyrazolopyridinecarboxaldehydes.Reaction of the pyrazolopyridine with acyl hali