75344-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75344-87-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,3,4 and 4 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 75344-87:
(7*7)+(6*5)+(5*3)+(4*4)+(3*4)+(2*8)+(1*7)=145
145 % 10 = 5
So 75344-87-5 is a valid CAS Registry Number.
75344-87-5Relevant articles and documents
Synthesis of 10,11-Dihydroxyaporphines and of Protected 10,11-Dihydroxyaporphines from Codeine
Ram, Vishnu J.
, p. 1085 - 1088 (2007/10/02)
N-Alkylnoraporphines 6 and their 10,11-(methylenedioxy)derivatives 5 are prepared from codeine (1).Furthermore, the nitrogen mustard 7 is prepared from N-(2-hydroxyethyl)-10,11-(methylenedioxy)noraporphine (5e) by reaction with thionyl chloride.