183321-83-7 Usage
General Description
Erlotinib Impurity B is a chemical impurity that is commonly found in Erlotinib, a medication used for the treatment of various types of cancer. It is a byproduct produced during the manufacturing process of Erlotinib and is considered to be an unwanted substance in the final drug product. Erlotinib Impurity B is classified as a potential genotoxic impurity, meaning it has the potential to cause damage to DNA. Therefore, it is important to control the levels of this impurity in Erlotinib products to ensure the safety and efficacy of the medication for patients. Manufacturing processes and quality control measures are put in place to minimize the presence of Erlotinib Impurity B in the final drug product.
Check Digit Verification of cas no
The CAS Registry Mumber 183321-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,3,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 183321-83:
(8*1)+(7*8)+(6*3)+(5*3)+(4*2)+(3*1)+(2*8)+(1*3)=127
127 % 10 = 7
So 183321-83-7 is a valid CAS Registry Number.
183321-83-7Relevant articles and documents
Quinazoline derivatives
-
, (2008/06/13)
The invention relates to certain 4-(substitutedphenylamino)quinazoline derivatives of formula (I), their produgs and pharmaceutically acceptable salts wherein R1, R2, R3, R4, m and n are described in said formula. The compounds of formula (1), their produgs and pharmaceutically acceptable salts are useful for the treatment of hyperproliferative diseases.
