A carbohydrate is a biomolecule consisting of carbon, hydrogen and oxygen atoms, usually with a hydrogenâoxygen atom ratio of 2:1; in other words, with the empirical formula Cm(H2O)n. This formula holds true for monosaccharides. Some exceptions exist; for example, deoxyribose, a sugar component of DNA, has the empirical formula C5H10O4. The carbohydrates are technically hydrates of carbon; structurally it is more accurate to view them as aldoses and ketones. The term is most common in ...
Card Security Code (CSC). The card security code (CSC), also known as the Card Verification Value (CVV) is a 3- or 4-digit number associated with your credit card, printed only on the card and not on statements or charge slips.
The CVV code helps ascertain that the customer placing the order actually possesses the credit/debit card and that the card account is legitimate. Each credit card company has its own name for the CVV code, but it functions the same for all major card types. The back panel of most Visa/MasterCard cards contain the full 16-digit account number, followed by the CVV/CVC code.