1161025-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1161025-56-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,1,0,2 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1161025-56:
(9*1)+(8*1)+(7*6)+(6*1)+(5*0)+(4*2)+(3*5)+(2*5)+(1*6)=104
104 % 10 = 4
So 1161025-56-4 is a valid CAS Registry Number.
1161025-56-4Relevant articles and documents
Improved process for the preparation of tamsulosin hydrochloride
Reddy, A. Veera,Bhaskara Rao, S. Udaya,Narasimha, G. Lakshmi,Dubey
experimental part, p. 1451 - 1456 (2009/09/25)
Ellman's sulfinamide reagent is used in asymmetric synthesis of Tamsulosin hydrochloride. The enantiomeric ratio achieved is 87:13. The crystallization of the same with dibenzoyl tartarate afforded the product 2 with 99.5% ee.
