157332-05-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157332-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,3,3 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 157332-05:
(8*1)+(7*5)+(6*7)+(5*3)+(4*3)+(3*2)+(2*0)+(1*5)=123
123 % 10 = 3
So 157332-05-3 is a valid CAS Registry Number.
157332-05-3Relevant articles and documents
An efficient iminophosphorane-mediated synthesis for pyrido[3',2':4,5]thieno[3,2-d] pyrimidine derivatives
Peinador,Moreira,Quintela
, p. 6705 - 6714 (1994)
A ready one-pot preparation for pyridothienopyrimidines bearing various substituents at position 2 of the pyrimidine ring is reported. The aza Wittig-type reaction of iminophosphoranes derived from the aldehyde 4 with heterocumulenes leads to functionaliz
