109629-24-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109629-24-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,2 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 109629-24:
(8*1)+(7*0)+(6*9)+(5*6)+(4*2)+(3*9)+(2*2)+(1*4)=135
135 % 10 = 5
So 109629-24-5 is a valid CAS Registry Number.
109629-24-5Relevant articles and documents
Synthesis of 4-substituted 1--1H-pyrazolopyrimidines
Taha, Mohamed L.,Lazrek, Hassan B.
, p. 163 - 168 (2007/10/03)
Treatment of 5-O-benzoyl-1,3-dioxane 5 with acetylchloride gave (3-acetoxy-2-O-benzoyl-1-propoxy)methylchloride 6 in 95percent yield.The heterocycles 7a-c were alkylated with 6.The N1-alkylated products 8a-c (regioselectively obtained in 60-80p